In the US the federal minimum wage of $7.25/hour hasn't changed since 2009. $7.25 today is equivalent to about $5.58 in 2009 with inflation. Really puts into perspective how much the minimum is falling behind the times and failing those who are forced to rely on it to get by.
It genuinely doesn't matter what we end up making the minimum wage, whether it's $10, $15, $25, or $100/hour. If minimum wage doesn't get tied to inflation, you will ALWAYS fall behind and lose value again. THAT is what you really need to fight for.