'People/women/artists/etc of colour' is a US usage that has definitely crossed the Atlantic already and 'coloured' is following.
Our generation was taught to use 'black' and consider 'coloured' an awful faux pas, but our GP's generation had been taught the opposite, so they tend(ed) to resist the change. Now it seems we're cycling back.
But the important bit is this;
The fact I am the great granddaughter of a farmer who basically lived in poverty has no bearing on my life today and sorry and correct me if I'm wrong but I do believe that the ancestry of black people today also does not directly affect the lives of their great grandchildren. I have so.much sympathy for what the slaves went through and it is certainly a huge shameful mark in our history but I, same as all people.of my generation did not personally impose slavery on anyone and I'm pretty sick of feeling guilty for it.
The first obvious point is that race is visible. It isn't obvious by looking at you who your antecedents were or what they did. But the vast majority of African-Americans are the decendants of slaves so the difference (and the lineage) are immediately visible.
You've said 'Mom' so I'm not sure if you're in the US or in the UK Midlands, but if you're in the UK (or even if you're not) bear in mind that the history of discrimination and segregation there is actually far worse than in the UK and (in some states more than others) was judicially perpetuated and socially accepted (by some) right up until recent decades, meaning African-Americans have had very little time to accumulate financial, educational, or social capital as a group and have NEVER reached parity with the wider community in any indicator.
Also; Kanye is barking mad in much of the nervous breakdown he is conducting on Twitter and not the best source of anything 