If you do the comparisons in normalized dollars and compare to productivity, minimum wage (if it tracked to the same purchasing power as it did in the 1950s) would be somewhere around $26 in today's dollars. If you do the same but track to inflation, it would be about $22.
When the wage doesn't keep track to inflation, it's not 'increasing', it's a pay cut. When it doesn't track to productivity, it's a pay cut out of labor's part of any growth.
When workers earning suppressed wages compete to buy things like housing, they're bidding against the class of people that received the share of productivity they didn't- and when the folks making more bid up prices of those things, it's a double-whammy of foregone wage + increased cost-of-living.
It should be noted that this is the federal minimum wage. Many states set a higher minimum wage than that. For example, California's minimum wage will be $16/hr starting January 1st, Virginia is $12/hr, and New York is $14.20/hr.
In California, fast food workers wages will go up to $20 an hour we found today. That's more than some college educated people make. Something is wrong here.
Do you remember that wages rose when unemployment was low?
Why is there a need for minimum wage?
Edit: downvoters, what do you want? A high minimum wage job while many are unemployed? Why focus on minimum wage when you can have low unemployment and decent wages for everybody at the same time by reducing unemployment?