Should the community have the power to shut him up?
No. The 1st Amendment to the Constitution guarantees the jackass the right to publicly express his jackassiness, or else words on paper have no meaning.
Now if you can get the USSC to honor the jackass's right to free speech on public property, maybe it would also honor the right of pro-life protesters to hold up signs on public sidewalks in the immediate vicinity of abortuaries instead of hundreds of feet away.
Ah, but your previous post implied that it is only Congress has the obligation to honor free speech. The people or states are not expressly bound by this requirement, and therefore freely able to shut him up.