Locally, $15 is not mandatory, but pretty much the norm for minimum. And as soon as it went up, costs exploded.
The investors and members of the board are going to maximize their profits, and no matter what the minimum wage becomes, they will drive up inflation to the extent that min. wage workers never get ahead.
All instead of accepting that they have sufficient profits and can take a little less to make the world a better place.
Getting off soap box now.
Side Note: Revolution does not require violence. I'm not advocating murder here. I'm saying there are other ways than just giving up.