We didn't create Bin Laden, your leftist blame-the-victim spin notwithstanding.
Nor was our opposition to communism irrational.
My problem with McCarthy is that his excesses permitted the Left to seize the moral high ground, and to bludgeon conservatives with shrill accusations of "McCarthyism" whenever we opposed them. But the threat McCarthy identified was, and is, quite real.
One irony is that one of the people McCarthy complained about was a woman named Dorothy Franklin, who was a member of, I think, three front groups. Needless to say, the Left defended Franklin and she became a standard example of "McCarthyism." In 1972, Franklin was working for one of the Democrat candidates for President when Nelson Rockefeller, of all peole, asked why that particular candidate was employing a former Communist.
Implicit admission that McCarthy was right.