security guard. >> right away i knew he was deaf and he was trying to let the security guard know he was deaf. >> but the security guard who now has alejandro in a head lock doesn't appear to notice. alejandro's brother, pablo, tries to get the guard's attention, but it's difficult because pablo, too, is deaf. >> he's running around and yelling and it's unfortunate that deaf people don't articulate their voices as well as hearing people. >> what you hear is a lot of and there are only some prime evil screams. you could feel the pain in their voices even though they can't articulate what they're saying. you can hear what they're feeling, there is a panic there. >> pablo is unable to help his brother. >> another security guard that was lulling him out to intervene into the situation. >> he's choking him. >> he's turning purple. >> the most shocking part of the