Don’t assume malice. Assume ignorance. Life is easier, the world is kinder, and you can educate. Actual malice is pretty rare, I find.
Always remember Hanlon’s Razor–”Never assume malice when incompetence will suffice as an explanation.”
That’s said, never forget Fred Clark’s Law, either: “Sufficiently advanced incompetence is indistinguishable from malice.” There’s a certain point at which ignorance becomes malice–at which there is simply no way to become that ignorant except deliberately and maliciously.
This second one. Ignorance, once brought to the attention of the ignorant, becomes malice when they refuse to change. Ignorance is okay but willful ignorance is not.