Reuters' lead paragraph missed the truth:
A comedian impersonating President Barack Obama was cut short and ushered off the stage at a gathering of Republican activists on Saturday after a series of off-color jokes.
The truth is probably buried in the last paragraphs.
He also ... mocked Republican presidential candidate Mitt Romney's Mormon faith and said Republican Tim Pawlenty needed a spinal transplant after his failure to confront Romney on healthcare at a debate earlier this week.
As Brown was launching into a joke about Republican Michele Bachmann, the music came up and Davis came on stage to cut him off.
C-Span full link.