What led to senator mccarthy's downfall?

Ultimately, Joe McCarthy was using weak evidence to accuse people of being communist. Through his televised questioning of the army, many of whom were war heroes, the public saw the mean-spiritedness of McCarthy’s campaign. Polls showed the American people thought McCarthy devious in his attack of the army. Fed up, McCarthy’s colleagues censured him for dishonoring the Senate, and the hearings came to a close.

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