By Bonnie Stiernberg Legendary Monty Python comedian John Cleese has sparked controversy in recent years for railing against “cancel culture” and what he has described as “woke jokes,” and it sounds as though he’s determined to keep blurting out cringey opinions and bad jokes until someone steps in and puts a stop to it. But according to The Hollywood Reporter, that’s exactly what happened at a comedy panel at Austin’s South by Southwest festival when Cleese had his microphone snatched away after making some embarrassing comments about slavery. Cleese was appearing on the “John Cleese in Conve…