Original sentence: Not only is Westboro opposed by supporters of gay rights, but most other Christian groups (including those who agree with Westboro that homosexuality is a sin) oppose Westboro's theology and practice, believing it to be incompatible with authentic Christian teachings
Edited sentence: Not only is Westboro opposed by supporters of gay rights, but most people with common sense, and other Christian groups (including those who agree with Westboro that homosexuality is a sin) oppose Westboro's theology and practice, believing it to be incompatible with authentic Christian teachings