Conversation so far:
when did Walter Winchell go on television?
1950s
what was Walter Winchell's show called when he goes on television in the 1950s?
His weekly radio broadcast was simulcast on ABC television until he ended that association because of a dispute with ABC executives in 1955.
what was the dispute between Walter Winchell and ABC executives in 1955 about?
Winchell supported Senator Joseph McCarthy's quest to identify Communists in the entertainment industry, but his popularity and influence began to decline as the public turned against McCarthy.

Question: why did they turn against mccarthy?
Self-contained rewrite: why did the public turn against Senator Joseph McCarthy?