Another tourist at the Tower of London thinks she's at Disneyland, gets screamed at by guard

hate to devil’s advocate, I’ve just never been to london so I have no idea - is there a sign that says “do not interfere with the guards, they are on duty” ? They’re famous for standing there motionless and whatever all day so it seems reasonable that they are seen as a tourist attraction by the general public, however they are actually security staff and not character performers.

I mean yeah sure the horse may kick or bite, what about the people?