I’m just giving my personal experience as a data point.

All my in-laws are in Tehran: aunts, uncles, cousins. Everybody is anti-regime.

It’s hard for us to understand in the west. Speaking out against the regime is not possible.

These people who congregated on the bridges were phoned up by the regime as a marketing stunt. Perhaps they were family members or friends of the IRGC. Perhaps they were forced to go, because you can’t say no to the regime. They hang protesters.

I saw someone in another thread compare it to the USSR. Or maybe North Korea.

I’m not saying that there aren’t regime supporters, there definitely are. But you have to be very suspect whenever you see videos of “grassroots” supporters of the regime and remember that opposition voices are not allowed.