RT [@NBCInvestigates](https://twitter.com/NBCInvestigates/status/1348372550506733570) Exclusive from @KenDilanianNBC @tom_winter @jonathan4ny with @JuliaEAinsley @anblanx and Mike Kosnar.
FBI, NYPD gave info to the Capitol Police about the possibility of violence during the D.C. protests that turned into a deadly riot, say senior officials.
https://t.co/Z1Kse0C4Ox