Do you actually understand what the phrase "root cause" means? If current inequality was caused by past discrimination then the root cause of inequality is discrimination. Of course, only a nitwit wouls suggest discrimination doesn't take place today.
Cite needed. If past policies designed to deny economic opportunity and education to blacks (for example) are no longer relevant, then why is there such a giant gap in social mobility between blacks and whites? And yes I'm aware of the social mobility gap that exists among whites who are born poor, which only serves to undermine your claim further.
In part. It's more complex than that and power and economics have always shaped ideas around race: witness, for example, the mutable notions of what constitutes whiteness.
Not exploring white privilege and unconscious racism serves no purpose but to sooth the feelings of aggrieved white folks.
And the precise nature of that nasty rhetoric can speak volumes. But I suppose it doesn't matter to you, someone who probably doesn't see the difference between calling Clinton a cheating horndog, Reagan a senile old fool or Obama a n**ger.
Some poor people are more privileged than others and sometimes that's due to their skin colour. Look, for example, at incarceration rates for poor blacks versus poor whites and explain that.
Tough to move on when some people can't even acknowledge the wrongs of the past or the existence of similar wrongs in the present.