I was thinking about your points while writing my post. The Race Card will be ineffective against Omar Navarro who will deliver crushing blows to the Water’s campaign. California, with their lax border control, has become a Latino bastion with most of the illegals registered to vote. A big part of winning a political campaign is playing the demographics. Navarro will be in he game to win it.
There have been tensions in the NYC area between these two groups for years, as a growing Hispanic population gradually takes council seats and such from blacks as their populations recede. Both groups were targeted with race-baiting by Dems, now Hispanics want payment. This was even an issue in selecting the DNC chair, and the Hispanic Perez beat out the black Ellison.
Dems can never keep everyone happy when they promise everything to everyone; I suspect this led to Trump winning white women in 2016.