Go after their historical heroes:
Margaret Sanger (racist, eugenics-espousing Planned Parenthood founder)
Franklin D. Roosevelt (Japanese internment)
Harvey Milk (what did he even do?)
If the Left wants to hold people such as Christopher Columbus, Robert E. Lee, Andrew Jackson and Thomas Jefferson to today's standards, then it's time to hold their icons to 2017 standards.
“Harvey Milk (what did he even do?)”
He blew guys then got shot.