Disregarding whether you like President Trump or not, it's really baffling to me how this narrative came up.
From what I've seen the narrative really blew around the time the primaries were over and the DNC conference was occurring at the time. I don't see anyone ever speak on this, however, the #DNC wikileaks was quite a stir if you remember. Basically, when wikileaks reported the corrupted campaign of the Democratic party, the DNC found a way to point fingers at Russia for doing so, even though Julian Assange and his staff at wikileaks clearly were behind the "cyber attacks" they pitted against Russia.
Why blame Russia you ask? From my understanding, there were 2 key factors, 1 - Trump and Putin's mutual respect: Now this I can understand, and could be plausible if you aren't aware of how wiki-leaks works. Given the respect and wishes to bring the two nations in better standing, I could see why that would be an immediate reaction, though... the second reason is what really baffles me.
2- Clearly, as we have seen Clinton's work in the past, it's no secret that Putin and his administration disdain Clinton's camp for her actions.
Because of the skirmish of threats arising, Russia's act of defensive preparation was seen as a 'threat', i.e safety drills, developing certain weapons, and what not.

Even then, let's say none of this was the case....where is the evidence, how exactly does it develop in this case? It's pretty insane how far a narrative can go without presenting evidence or justifying the lack thereof by any means....

Now I could go on a tangent, however my time here is limited. Thank you @craig-grant for posting this video! Project Veritas has always been a fan fav <3