Most people like to do what others are doing and believe as others believe. Propagandists know and capitalize on this human tendency.
"Everybody is joining our cause," they say. "Come along or you'll find yourself alone."
It requires will power and the ability to think for oneself, to resist hopping on the band wagon. Do not be fooled into joining a movement simply because "others are doing it."
Chapter 23 Language and Logic, in Warriner's English Grammar and Composition Revised Edition, Complete Course, John E. Warriner and Francis Griffith, 1965