for me, the gist of this guy's letter was a bit twisted.  radical islam terrorist...? he's seems to point/counterpoint himself in his short letter.  i got out of it that he thinks shooting cops is a bad thing but other than that...?
  the skin color shouldn't matter - shouldn't make one a victim or a "hero"..  the cops did apply for the job - some are delusional and think they are the fix,   some of them are just adrenaline junky control freaks who would take any job that let them BE the upper hand.  some are ex military who like the rush and the camaraderie. and some are cops want to protect and serve...they have a servant's heart.  these cops get mowed over.  they either "toughen up" ie: push some folks around.... or they find a niche in the force or just leave.  the racial inequity here in the USA,  in 2016,  that still exists, is amazing.  sometimes ignorance can't be educated out.  sometimes ignorance just stands alone in the face of all odds.