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McCarthyism
The majority opinion uses lower courts' decisions on the same case as evidence
Determining the natural variations that exist in physical evidence
A hear say evidence is not enough for a person to be indicted.
An authoritarian government is usually evidence of single-party rule.
Joseph McCarthy's tactics were controversial because he used false accusations, propaganda, and fear-mongering tactics to target alleged communists without providing substantial evidence. This led to a "witch hunt" atmosphere that ruined many individuals' reputations and careers, creating a climate of paranoia and intolerance during the Red Scare in the 1950s.
McCarthyism mean making unfair accusations of disloyalty without evidence. The term is named after Senator Joseph McCarthy who in the 1950s accused thousands of Americans of being communists or communist sympathizers.
McCarthyism is the practice of making accusations of disloyalty, subversion, or treason without proper regard for evidence. During the McCarthy era, thousands of Americans were accused of being Communists or communist sympathizers.
It threatened peoples rights to privacy. Also McCarthy often never had proper evidence, warrants, or proof of his communist accusations. Although he did help to weed out some communists in office, he also injustly accused many who were innocent. :)
To make accusations of treason (for example communism) without full evidence
He claimed to have a list of Communists and their actions, however this was never seen and neither was any other concrete evidence presented.
McCarthyism
He provided evidence to back up his accusations.
Evidence together with argument as to how the evidence makes the claim (the proposition that someone is claiming to be true) more credible.
It was necessary to have proper evidence against the accused in court, but the people that made accusations during the McCarthy Era didn't need evidence to accuse others.
Senator Joseph McCarthy was the senator who called people communists without any evidence to back it up those claims. McCarthyism is a term to describe a person who calls people negative descriptions, especially communist, without any evidence to support those accusations.
Most generally this is an Americanism which means the act of legislatively levelling accusations of treason or subversion without supporting evidence. Specifically, it arose from the activities of the House Un-American Activities Committeeinto the activities of "suspected Communists", chaired by Sen. Joseph McCarthy (1908-1957) of Wisconsin, most prominently toward the Hollywood blacklist.