you guys.
You'd rather not celebrate the slave holding founders at all but if there has to be a "celebration" it should not have the flag, fireworks or any patriotic theme.
Hold the celebration at an abortion mill or a welfare office.
The abortion mill can be celebrated as a positive aspect of socialist policy and the welfare office can be celebrated as evidence of the compassion of the socialist party.
Maybe a few hammer and cycle flags. Raskputin has some.
https://www.wsj.com/articles/with-mount-rushmore-visit-trump-to-emphasize-history-and-court-controversy-11593693496