It happens a thousand times a day. Evidence of a crime is presented, an investigation takes place, and a judicial system must decide if there's enough to pursue specified charges.
Sometimes innocent people are being hounded. Sometimes less innocent people are skating on technicalities and loopholes. Since this two year "exonerating" process actually indicted several people close to the President, and got others to cop plea deals, smart money leans to the latter.
Now that Trump has declared his pursuers treasonous and evil and recommended legal revenge, I'm sure you will grant them the presumption of innocence.