@emmett grogan,
Mr, I am not trying to offend you here, but damn, I am speechless to what you said. If all liberals are thinking what you just thought, this is truly sad...
Ok, here's where you are wrong. This article you sent from BLS only said minimum wage earner constitutes 4.7% of the labor force. However, by definition, minimum wage earners are those are are making $7.25 an hour. So the question becomes, how many workers today who are earning anything between $8-$14 an hour? Please understand that $15 an hour equals about $31k annually assuming the normal 40 hour per week work schedule. According to SSA roughly 50% of the population is earning less than 31k. See for yourself:
https://www.ssa.gov/oact/cola/central.html
So you are NOT just doubling the 4.7% of the LOWEST wage earners. It's a cascade increase from ALL populations earning $7.25-$14 which is SIGNIFICANTLY larger than just 4.7%. This will have a disastrous effect on the economy. Inflation, price increase...etc will have compounding effect. And those who are already making $15 will feel poorer (the sinking of middle class -- a dangerous economic phenomenon).
Please read some economics journal and you'll understand that $15 will actually destroy this nation by pulling down the middle class, the country's supporting beam, thereby creating just two class of people -- the poor (still even if they earn $15) or the very rich. You'll be increasing the real economic power disparity, not decreasing it.