Read Chapter 6 of Mein Kampf and realize that America has honed that craft to an art form. http://www.mondopolitico.com/library/meinkampf/v1c6.htm

Review the propaganda of our past wars and understand that this is what they do with every war to get people on board with the insanity of sending their own kids off to die for them. It's not new. Read War Is A Racket by Major General Smedley Butler: https://www.ratical.org/ratville/CAH/warisaracket.html

Understand that "both sides" agitate for war and/or violent manipulation of foreign countries. If you're upset that Russia interferes with our elections, look in the mirror. We do much worse and have done for decades. Defense contractors figure prominently in the investment portfolios of representatives of both parties.

Keep informed. This is a dependable, convenient place. https://www.antiwar.com