The only bad tactic is one that doesn't work. "Leftards" control the government at all levels, the media, every major corporation, every NGO, every educational institution, and most churches. What they are doing works. Remember the Rules for Radicals, especially 5 and 13

5. "Ridicule is man's most potent weapon. There is no defense. It is almost impossible to counterattack ridicule. Also it infuriates the opposition, who then react to your advantage."

13. "Pick the target, freeze it, personalize it, and polarize it. "

So what are you going to believe: a graphic produced by some lefty educator meant to reduce the general populations ability to influence others, or the lefts own bible of how to win a propaganda war?