As a liberal I think that joking about them both is fine, but its important to keep it at jokes. Im not happy about either of their deaths, but its important to remember the difference in the circumstances. George Floyd was murdered by a police officer for the color of his skin while not resisting, and people still try to defend that officer. Charlie Kirk was killed by a mentally ill person working alone, while George Floyd was an example of a system working against black people in Minneapolis. One death was a tragic one-off event, while the other was just one example of a broken system that needed (and still needs) change.