Why can't they relate to other imagery? Maybe because they have been told since birth that the only imagery they could relate to is of someone who looks exactly like them?
And why isn't there better examples? Why rappers singing about killing cops and raping bitches get showered with money and adoration, and never get called out on the impact they make on the community by their example? Why it's not a topic of the discussion? Social impact of business is all the hot topic now, but try to find an article about social impact of gangsta rap and its glorification on the African-American community? Why people like Herman Cain - successful businessman, author, publicist and politician, or Benjamin Carson - pioneering neurosurgeon, holder of 60 honorary doctorates, recipient of the Presidential Medal of Freedom - are not getting even one hundredths of an adoration a rapper does? Who is to blame for that? Who is calling out this and trying to change that? Who is responsible for the fact that much more kids want to be Tupac, a convicted rapist, than Carson, a neurosurgeon with Presidential Medal of Freedom?
> Find a minority politician (Ocasio-Cortez maybe?) you like and support her
Rather bad example. I already lived under socialism, I don't need another one. Especially not one with intellectual capacities so limited as AOC. If you wanted to promote your cause (though I frankly don't care too much if politician is "minority", I care for her or his views, principles and capabilities), it's better to choose some politician that is not the laughingstock of the nation. AOC is of Puerto-Rican descent (well, she's from Bronx, but her parents come from Puerto-Rico). There are by now dozens, if not hundreds, prominent politicians of similar descent. Why should I choose the worst example? If I'd rather choose Nikki Haley, who is a very successful US ambassador and I hope one day will become a successful presidential candidate.
> Tell people the truth about Christopher Columbus
Columbus was a terrible person (among hundred others terrible conquistadors), but who cares now? Do you thing a young person in poor school that dreams of one day getting to college and becoming a neurosurgeon but can't really study because his peers are unruly and they'd mess him up if they learn he's trying to get ahead and study instead of listening for gangsta rap and smoking ganja like normal people do - do you think he cares about how white people view Columbus? Do you think that is his or her primary problem that we need to solve now?