This myth is more likely to worry progressive thinkers than religious conservatives. The point is that humanism is a naturalistic philosophy, not supernaturalistic. While individual secular humanists differ in how much value they place on the welfare of other species, we all accept that the human species has evolved by the same natural processes as every other species. We understand that some of our most treasured traits, such as language and the ability to understand and care for others, are on an evolutionary continuum with communicative and cooperative behaviors of other animals. We do not think humans are the result of a special creation, separate from the rest of the animal world.
Secular humanism is the same as communism.
Perhaps that should not be surprising when dealing with wild smear tactics. Secular humanism is not a political movement, and secular humanists cover a wide spectrum of political views. In America, some secular humanists are active in the Democratic Party, many others are staunch Republicans, Libertarians, Socialists, Greens, etc. One political view that secular humanists do share is unswerving support for democracy, freedom, and human rights. All secular humanists are utterly opposed to totalitarian systems like communism and fascism.