From the article you can see that there were some RINOs involved with shutting down the anti-communism movement in America:

Millions of Americans loved what they saw. At the peak of his influence, McCarthy boasted a 50 percent approval rating; like Trump, he divided the country with near-perfect precision. Among Republicans, he was even more widely admired, if not quite universally. In June 1950, Republican Sen. Margaret Chase Smith ***delivered what she described as a "Declaration of Conscience," accusing McCarthy of promoting "fear, ignorance, bigotry and smear" and of turning the Senate into "a forum of hate and character assassination." Though six other Republican senators joined in her dissent, the rest remained silent.
Less often noted is the counter narrative that began to build among McCarthy's grass-roots supporters during those years, in which the sheer volume of criticism aimed at the senator became proof that he was right all along: that the country was, indeed, run by a menacing but elusive liberal-communist conspiracy aimed at taking down right-thinking, God-fearing Americans.
*** In 1945, she voted against making the House Un-American Activities Committee a permanent body.