Let's lay out the evidence for Clinton "collusion." People that agree with Trump here can feel free to add.
Most importantly, the primary debate scandal was severely cut down. This shows the DNC expected an easy Clinton win, although it was decided before Bernie was even a blip so it's not an attack on his campaign.
DNC staffers didn't like Bernie and speculated about, but didn't implement, dirty tricks to use against him.
Bernie was lightly punished after one of his staffers hacked DNC records.
Donna Brazille unethically shared a debate question or two with the Clinton camp.
Hillary and the DNC didn't cave to some of Bernie's desperate last-minute demands for things like more debates.
Hillary supporters unfairly blew up an incident where Bernie supporters got rowdy and a guy had to be talked out of throwing a chair as a wild chair-throwing brawl.
Superdelegates existing and backing front runners instead of giving the election to Bernie, damn the vote count, because he was allegedly more electable in the general.
That's all I can remember right now.
Those show definite favoritism, for sure, but I think to meet the bar for collusion you'd have to show Hillary didn't just benefit from, but also coordinated with the DNC on those things. That's the same evidence that needs to be proven to lock up Trump, that he coordinated with Russia.
