German government run channel ZDF was caught manipulating video of violent protests at the G20. The edited footage makes it appear as if peaceful protesters were unworrentedly attacked by police.  The part that was edited out showed how the masked rioters attacked and tried to break through a police barrier.

Detailed report in German here: 

Ironically, the said government TV channel reported in 2016: “Trust in quality media (mainstream media) remains high”.