I'm probably gonna get kicked here, but seriously, just after reading a few comments on posts on this server today, common and debunked gems of Republican propaganda constantly pop out.
Stuff like:
"Assassinating Caesar was the only option and Brutus did it to save the Roman Republic" (this one's particularly bad),
"Pompey was bad, but not nearly as bad as Augustus",
"The Varian Disaster is the beginning of the e