Thomas speaks from experience. As a strict constructionist, who believes the Constitution means only what the founders intended, he frequently is vilified by those who want its meaning to be expanded by judges. For example, as Thomas noted in a speech to the American Enterprise Institute, he was accused of advocating prison brutality several years ago after he said the prohibition against cruel and unusual punishment hadn't been violated when a guard hit an inmate. Even if one has a valid position, and is intellectually honest, he has to anticipate nasty responses aimed at the messenger rather than the argument.
Verbal bullies are like playground bullies.
Once they see they have intimidated others, they don't stop. None of the three backed down when bullied. Neither should other people seeking to express legitimate opinions. Nonetheless, they must stand undaunted. It also is necessary to achieve good public policy, which comes from an open and vigorous debate of the issues themselves.