It's a straw-man, and so is the video. Nice distraction.
Russia is being investigated as a foreign adversary that has, in ways now known to the public, meddled in our presidential election.
Because Trump's campaigners and Flynn, etc., and Trump himself, show an unsettling friendliness and communications towards our largest adversary in the world, it looks guilty enough to pursue opening up the investigation to include them, and to see where it leads.
During this time of investigation, Trump himself appears to be trying to derail the investigation and cover it up. His continued tweets, his meeting with Russians after firing Comey and his commitments, his unprofessional comments to Comey in trying to get him to back up Flynn, guage his loyalty directly, etc., all look guilty and add to the mountain of circumstantial evidence.
So the investigations continue. We're told they could take years before reaching any conclusions, and that it will largely be closed door/private during that time.
So the question "but what crime did he commit?!" is what the investigation is in part, trying to evaluate, if there is a crime that some of these guilty-looking Americans have gotten caught with.
Asking why there is outrage and an investigation, without there being evidence of a crime, is absurd. But then, that's really the central thesis to this presidency isn't it?
50% of the critical mass of this ongoing saga however has nothing to do with crimes. We have gotten the opportunity to see Trump in "action" these past 100+ days, and he's demonstrated a level of immaturity, impulsiveness, incompetence, ignorance, arrogance, selfishness, all rolled up with a complete and obvious disregard for honesty, to the point I know many people have lost all coincidence in him as POTUS, and are literally worried about the fate of the nation under his circus clown tent of madness. <- that, will never stop while he's POTUS, so you better buckle up. No investigation will end it, no evidence will end it. The only way to end it is if Trump grew up and educated himself, and we all know that will never happen in his lifetime.