My take

Football is a violent game played mostly by violent men w/ limited control over their thought processes.

Anger issues ? Who wooda thought?

Why would anyone be shocked (shocked I tell you, shocked) when they "act out".

Do we really expect these guys to model their behavior after the normal guy on the street or in the work place ?

BTW: the angriest player on that field was No. 23 of the Niners. He reminds me of Jim Taylor of the Packers-he enjoys the contact and runs at people and hard.