Yes, but let me cite Joseph Goebbels:

“Only those who can reduce problems to their simplest form and have the courage to keep repeating them in this simplified form—even in the face of objections from intellectuals—will, in the long run, achieve fundamental success in influencing public opinion.”

IIf you have a megaphone that lets you repeat your propaganda 100 times a day (and, thanks to modern data analysis, even tailor it to each individual recipient), it won't be hard for you to steer public opinion in the direction you want (and based on your lies).