Honestly, I think it's being practiced every day by everyone. Everyone wants you to believe something, and everyone tries their very hardest to push that view on you. Eat less meat, don't drive since it's bad for the environment, give money to children in Africa, eat healthier, believe in and worship god, and so many other different political agendas people try to push on you, for and against these things and others, using TV, Social Media, flyers, spokes people and more.
These same people think the Jehova's witnesses are bad for knocking on your door from time to time, well, at least they didn't infiltrate my facebook account to push their agendas.
Please leave me alone world.