The solution is for our representatives to look out for us.
Representatives get into office on money. Low income workers, more or less by definition, don't have money. Therefore politicians don't actually care very much about them. They'll make the proper noises about it for interviews (because at least some poor people vote), but when it comes to actually doing something, very little manages to happen. I don't have any expectation that politicians will fix the problem. It's far more profitable to cater to people with money.
If you get into office by promising things to the people who will give you money to get into office, and then don't scratch their backs, "vote the bums out!" is very effective at finding a more compliant person for the position at the next election.
This is, of course, totally broken, and I hold the view that anyone who seeks a position of political power is, by that very nature, not suited to the position. I don't think a random draft for Congresscritters and local politicians would be any worse than what we have now. I'd also support a "None of the above" option in elections, and if that option won, a different slate of candidates would have to try for the position.
A nationwide raise in the minimum wage would lay off a small percentage of workers. Mostly it would cause higher inflation, in the first year. I would offset this by raising the earned income tax credit for the middle class.
If you raise the minimum wage and prices of things more or less rise to match, you've not really accomplished much other than "making the proper noises to get some of the poor people to vote for you." It usually will be swallowed up by a rise in housing prices in an area anyway (see my comments on that below).
EIC helps a little bit, but if you've raised minimum wage and costs rise, you've not really helped those making minimum wage much, and if you have to then spend money to keep the next tier of earners from falling right down onto the minimum wage line (with EIC), I'm not convinced this is a huge net benefit to anyone. None of this really bothers the wealthy one bit, though costing their businesses more money isn't going to be popular.
Either we voluntarily make a change or society slowly becomes more and more fractured. What is your solution?
Well, I don't actually have a "solution" that I think will work without major pain for everyone, unfortunately. I'm not convinced there is one.
A huge contributor to the problem we have right now is the Federal Reserve policy of "asset bubbles uber alles." Current Federal Reserve policy seems to more or less resolve to, "Blow asset bubbles. If one pops, find another one as soon as possible. If that one pops, shitshitshit, find another asset to inflate and create a bubble in!"
Yellen's response to poor people who don't benefit from the asset bubbles is more or less to tell them to own assets. It's only slightly more useful than just saying, "Well, have you tried not being poor?"
The very relevant downside of all this asset bubble blowing is that the created money has to find somewhere to go. Mostly, right now, it's going into stocks and housing. Stocks are mostly harmless (there's a lot of long term bad behavior that comes out of this, but very little of it is relevant to low income earners), but the housing price bubbles are incredibly harmful. In a lot of large cities, many towers worth of luxury apartments are being sold to people who have purchased them as investments, and they're mostly unoccupied. In other areas, small single family houses are bid to absurd prices by buyers who can afford huge mortgages due to the combination of bubble assets they're cashing in, and stupidly low interest rates the Fed keeps hoping will "fix things."
When you have unaffordable housing, and housing takes up most of a low income budget, there's not a huge amount that can be done. Throwing a bit more money at people isn't going to make a big difference, and at least in Seattle, the "15 NOW" minimum wage increases seem to be doing a great job of either driving small businesses out of business, or causing them to not hire people and the owners work more hours instead (for something well under minimum wage in terms of effective income). A small increase in housing prices will eat up the wage gains.
Building more inexpensive housing is an option, but it's generally a very unpopular option by those who own housing in the immediate area, since they are benefiting from the rise in housing prices that are a result of the scarcity. It's usually rammed through eventually as a condition of building luxury units, but there's not nearly enough being built to deal with the rise in housing prices in many popular areas.
I'd like to see a reversion to some sort of sane fiscal policy that doesn't involve blowing huge asset bubbles, but there's no way to correct the current state without a serious crash (of course, trying to maintain the current state of bubble blowing will also lead to crashes, as it has every other time it's been tried). So, sadly, I think we've backed ourselves into a corner from which there is no painless way out. There are a wide variety of ways out, one or more of which will eventually happen, and all of which are varying degrees of "catastrophic" to a large chunk of the population.
There's also the uncomfortable issue that the vast majority of people on this forum benefit from asset bubbles. We mostly either own assets or trying to own assets (stocks, housing, etc). So something that would actually be useful is likely to hurt this group of people decently. Doesn't really bother me, but it's something to keep in mind.
And the issue that our economic growth of the last 300 years is truly abnormal in the history of the planet, and can be attributed to the extreme use of fossil fuels. :) But that's another thread. Something about a 25 year depression that I think is just a cover for long term decline of western industrial civilization.
As far as useful things to do? Gardens and yard-scale livestock (chickens, ducks, rabbits, etc) are good options in low income areas.