Earlier quoted context omitted.
I like your take but politicians do have a target on their back that the average citizen doesn’t.
But not one so big that every one of them needs multimillion dollars worth of protecting. A handful absolutely do, the vast majority don't. They will be perfectly fine. They might catch an egg or cake, or in the rare instance a fist: they'll still be fine.
The handful of congresspeople in leadership get special protection from capital police. Most elected congress people only get special protection if there is a specific concern.