Abortion: Use anti-abortion instead of pro-life and abortion rights instead of pro-abortion or pro-choice. Avoid abortionist, which connotes a person who performs clandestine abortions.
-Associated Press Style Guide
Calls to mind the "Anti-Abortion opera":
A Los Angeles Times music critic who wrote that a Richard Strauss opera was "pro-life" -- meaning a celebration of life -- was stunned to pick up the paper and find his review changed by a literal-minded copy editor to read "anti-abortion."