Liberals don’t read.
But I will point out two things:
1. we should highlight to liberals about Islam and the Arab slave trade.
2. but we should also point out that the USA stopped slavery on its own and Europe stopped slavery on its own. And indeed these two forced the Arab world to stop slavery.
We can chastise Americans of the 19th century and earlier about slavery, but Americans stopped this on their own.
Good points. Also, Muhammad was a slave owner, so are the liberals going to start tearing down mosques?