Straw Man Fallacy

It is an attack on a weak position unrelated to arguments by the opponent.

One of the most popular fallacious rhetorical resources in politics, the straw man fallacy consists of not actually refuting the opponent’s arguments but constructing an argument that is easy to refute or attack, to attribute it explicitly or implicitly, and then to “refute” that position of artificially constructed weakness.- It is a form of Ignoratio Elenchi.

example:

-The government committed barbarity X

-You say that because you defend the opposition, part of which committed barbarity when it was the government and