This is what the rich are really afraid of: that support for Palestine acts as a catalyst for left-wing radicalism in general.

The wealthy know they've pushed it too far, that people are sick and tired of being exploited, from the jobless recoveries of the mid 90s, to the dotcom crash where we bailed out the wealthy, to the '08 crisis where we bailed them out even more only to have them piss it away on their own compensation, to the '10s where we rolled out the red carpet for them and let them party on cheap money for decade, to the pandemic where we shovelled money at them only to have them whine and cry about how we wouldn't work hard enough and how dare get off of our knees and ask, maybe, not to be ground so hard.

They know that this is a flashpoint, and they're scared, but despite that fear, they can't help themselves and despite ebing able to fix things by just not being so egregiously greedy, they're going to try to flex more and take more because, well, they've been able to since at least 1980. They think that because they escaped OWS, they're get off scott-free here.

So yeah, this is significant. If organized labour is getting off it's knees, and if the message sticks, there's a real cascade that could happen. We haven't seen labour do this since the mid-90s, if not the late 60s. It could, with momentum, result in some serious change.