We don't see protests when the internet goes down; we see them with people are killed by the police.
In Los Angeles (where I live) the people out in the streets in July during the pandemic protesting and burning cop cars were almost all unemployed young people, a veritable cross-section of all ethnicities in the city.
It's not just about risk. Most protestors had little or nothing to lose or risk anything to be out there.
Clearly, the fact that young people don't have dignified jobs and nothing to do but sit on social media all day and watch viral videos about obscene police violence is the fuel to the fire in this situation. I'm not saying police reform doesn't deserve a reckoning in the US, but there's definitely a correlation in internet use and protests.
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And even if that was established, “unemployed” is often an axis of social inequity, too.
Funny that you think the problem is the internet.
It's all middle and upper-middle class Americans who have the luxury and time to spend time on social media (often at work).
Your opponent nowadays is a very pragmatic autocratic regime, with it's own issues, but this corona-crisis at least showed they can keep their mandate of heaven. Four more years in this culture war and you won't be able to get consensus on anything.
So, no, it's not just middle- and upper-middle class Americans on social media.