Who was the strong anti-communist director of the fbi during the red scare?

The strong anti-communist director of the FBI during the Red Scare was J. Edgar Hoover.

Explanation:

J. Edgar Hoover was Director of the FBI for 48 years, from May 10, 1924 until his death in 1972, longer than any other person has ever been a chief in the US administration. During his time as FBI leader, he worked for eight different presidents. Nobody ever dared to challenge Hoover, as he certainly had extremely compromising material on every single American politician. It is alleged that Hoover had secret personalities for all famous American politicians.  

Hoover often exceeded his powers, he is accused of using extortion against well-known persons in politics, government, the army and large corporations, and engaged in illegal political persecution. Hoover's COINTELPRO program worked with a number of mafia-like methods to divide groups such as the Socialist Workers Party, the Ku Klux Klan, the Black Panthers Party, the Nation of Islam and the Southern Christian Leadership Conference.