I'm sorry, what?
"I want to reiterate that discrimination on any grounds is unacceptable and is damaging to our community"
"Profiling" and Discrimination used properly are tools. I'm using "discrimination" in a broader sense and not for action against somebody due to their skin color. Previously granted access is often suspended when there is a VIP visit or special function. If the group of students is known to be anti-monarchy or has a tendency to show up everywhere with a placard and a rehearsed suite of pithy chants, I expect that the school would not be enthusiastic about their attending an event with the Queen.
All sorts of places have lists of people that are banned. There are many lists that a state will keep of foreign nationals that will be denied entry at a port or will undergo a higher level of checking. I'm not vociferously political yet I am on a list somewhere as I'm always "randomly selected" for additional screening when I fly and have decided not to fly anymore unless I'm at the controls. Lots of lists are shared. Get asked to leave a casino in Las Vegas and if you have been naughty enough, your name and photo may show up on the watch list of other casinos.
Biting the hand that feeds IT
