Why can’t they protest somewhere that does not interrupt others’ lives? Block the traffic and you might get run over. Can’t blame the motorists for getting frustrated.
I don’t think he was frustrated - I think he feared for his life. That said, if the protestors didn’t disrupt other peoples’ lives, they wouldn’t get the attention their parents never gave them.
Surrounding someone’s car with a protesting mob evokes a lot more than frustration.