The context of the “joke” is incredibly important
If. You’re truly concerned with making progress
A bunch of old white guys constantly making fun of the black druggie. Where’s the humor and or progress in that? How is that bringing people together?
I'll try my best to explain. Let's say your issue was simply with being disrespectful towards the dead. That would be admirable, and would allow for the recognition of the dignity of Floyd as an individual. Taking offense at white people making jokes about the situation on the basis that Floyd was black eliminates the dignity of Floyd as an individual and collectives his experience to all people of a certain skin color. This is what used to be understood as the evil of racism. Now it's simply been flipped on its head, and is now a softer, paternalistic, patronizing and suffocating assumption that all people of a certain color must be protected from even the slightest of offense on the basis of skin color. As if the experiences of all black people across all time were homogenous, and the individuality of a black person doesn't exist. This way of thinking is evil whether it is antagonistic or protective.
It's funny, CRT teaches about white fragility, while assuming black fragility.
If a white drug addict with a criminal record od'd while trying to destroy evidence after trying to pass off counterfeit bills, and he happened to die while being restrained by a police officer for resisting arrest, it would be totally acceptable, by most people's standards, to ridicule him and say he got exactly what he deserved. As it should be, that guy should serves as a cautionary tale for everyone to not make those decisions. Floyd, on the other hand, and based solely on the virtue of his skin color is not only apparently off limits to ridicule, he is deified for his poor decisions. What sort of message does that send? It takes the soft bigotry of low expectations to all new levels.
Point being, in a post racism world, it would be perfectly acceptable for anyone of any skin color to criticize the bad decisions of anyone of any other skin color, and the idea of race or hatred motivating the criticism wouldn't cross anyone's mind. Stupid is as stupid does, no matter who's being stupid.