You could argue Reagan is heavily responsible for playing parts in the destabilization of the middle east and areas of central/south america. Throw in the many people who died of AIDS as he literally laughed at professional advice on how to deal with it because he didn't give a shit that blacks and gays were dying. Just one less step for him.

Let's throw in the crack epidemic, the overall ramping of the war on drugs alone is countless lives, and I'm sure I'm missing countless other atrocities that I forgot, or mostly cause I don't know if a brain can hold enough storage to compile all of Reagans atrocities.