You nailed the First Act! Which was written this way because this is how they thought they could win. The First Act is almost always organization, infiltration, and subversion using non-violent means. If they started with violence, societies would reject them outright. Non-violence also gives them to ability to paint their opposition as extreme if measures are taken to stop them.
See Joe McCarthy. 100% right about everything, could have prevented the cultural revolution of the 60s/70s (sexualization, feminism, abortion, protest culture) but viewed as an anti-1A extremist. What is the view of McCarthy in the face of AntiFa on US soil and the open suppression of Free Speech by the Left? Remember 1A?!?
The Second Act is where the violence comes in. They instigate, thus define how things progress, this is the advantage of Leftist revolution against an internal order/culture. Since counter-revolutionaries are always reactionary, they lie in wait because they lack the moral authority to be an effective deterrent (can't escalate/overwhelm). This is the powder keg and why gun control is so important to the Left.
We haven't seen this yet and there are many more variables in the calculation. Sure, the kids are broken but not all of them. Some of them are coming back to reason after trying to make Lib values work. The overt racism of the Left isn't helping their cause. If you are white it's a little hard to hear you have to "end." If you want a paycheck it's a little hard to hear you have to work for no reward. If you are a minority, it's obvious they are taking economic mobility and replacing you with immigrants. 2 + 2 <> 5.
Trump happened. USSC appointments set to shut down an activist court. Teachers unions destroyed by Janus which is going to be good for the kids.
This doesn't look like 100% America losing to me. Yeah, it's still a mixed bag but shows the Left isn't guaranteed a win, even after Obama.