redbaiter

red·bait

 (rĕd′bāt′)
tr.v. red·bait·ed, red·bait·ing, red·baits
To accuse, denounce, or attack (a person, for example) as a Communist or a Communist sympathizer.

red′bait′er n.
red′bait′ing n.

redbaiter

(ˈrɛdˌbeɪtə)
n
a person who deliberately antagonizes communists or people with left-wing beliefs
References in periodicals archive ?
Rebecca West was a fervent anti-Communist, but she was no redbaiter.
At first sight only a twisted logic augmented by historical ignorance could draw a parallel between relatively powerless academics and those well-orchestrated government-sanctioned redbaiters of the 1950s United States.
Of course the elder Williams was defrocked, hounded by redbaiters, and utterly without honor in his own country.