Here are the numbers from last year.
(taken from the article)
A review of trespass warnings issued last year at Disney showed more diversity. Out of 296 total trespass warnings at Downtown Disney in 2006, 29 went to blacks and 42 went to Hispanics, according to sheriff's records.
The rest -- 225 -- went to whites, Asians and others.
I think guys in the video might have brought some the attention from security on themselves. They were stopped and asked where they were heading they answered the Movies. Than when they noticed the Police/Security were following them they decided to turn around and walk another direction to see if they were followed. Than they went to the music store and than were stopped again when the Police/security said "I thought you were going to the movies?"
I am not saying the Police/Security is right but they have to act on what doesnt look right to them for the safety of other guests at DTD.