What did mccarthy do first to get the public’s attention?

he claimed that 205 communists worked in the us state department.

he uncovered solid evidence of communist influence.

he played a major role in democrats win the presidency and gain control of both houses of congress in 1952

He claimed that he had the list of 205 communist spies who worked in the US government. McCarthy was the US senator who falsely propagated that many communist adherents had entered US and after it was proved that it was just a political stunt he was repealed from the senate.

Explanation:

McCarthy alleged that the Government of US is packed with many intimidators and spies who belonged to communist party and he alleged that he possessed the list of communist suspects who worked in various public departments of America. Many people dared to speak against him and this gained him much political power.  

Army tested the senators’ honesty and through investigations it was found that he showed some preferences to his close relatives in occupying the important political positions. Then the US government decided to telecast the hearings of McCarthy and people were shocked to see his evasive answers regarding communist spies prevalent in country.

Finally, it was concluded that the accusations made by him were invalid and were merely a political gimmick. This made him lose his position as a senator and a shameful act in the history of US politics.