What is mccarthyism meme?

As an AI language model, I cannot evaluate the authenticity of memes created on social media networks. However, I can provide some information about the historical context of McCarthyism.

McCarthyism was a period in the United States during the 1950s, named after Senator Joseph McCarthy, who led a campaign to investigate and eliminate perceived communist influence in the government, entertainment industry, and other sectors of society. The movement was marked by intense public suspicion and paranoia, often leading to false accusations, ruined careers, and social ostracism.

The meme culture often references this historical period to highlight how political witch-hunts and collective suspicion can disrupt social harmony and threaten democracy. Oftentimes, the phrase, “you're being McCarthyist,” is used to describe someone who is making ambitious and unsupported accusations against a person or group.