Well, if someone wants to discriminate, they can do so regardless. I think it's much more insidious how people unconsciously can disregard people based on first

Well, if someone wants to discriminate, they can do so regardless. I think it's much more insidious how people unconsciously can disregard people based on first impression. It's sort of the case of "anchoring" -- if you form an initial impression, maybe just based on someone's clothes or mannerisms, it's likely to bias your final impression. (See lesswrong.com for many discussions about this.) Without the video, the first impression is more likely to be based on actual facts as opposed to personal judgment.