"My dear departed grandmothers (whose extraordinary legacy I described in a recent essay on this website), as well as my deceased parents, must be turning in their grave right now to see their family's name, reputation and proud Jamaican identity being connected, in any way, jokingly or not with the fraudulent stereotype of a pot-smoking joy seeker and in the pursuit of identity politics," he wrote.
Added Donald Harris: "Speaking for myself and my immediate Jamaican family, we wish to categorically dissociate ourselves from this travesty."
It not hard to parse. He's angry about...
1) Continuing the negative stereotype of Jamaicans being pot-smoking joy seekers.
2) pursuing identity politics saying that she understands/approves Pot because she's half Jamaican, even though he knows that they've been largely estranged and that she doesn't really know the heritage. It's appropriating an unearned heritage.
I think get the sense that he's a very serious person who is sick of Jamaican Bob Marley stereotypes.