This appears to be the YouTube channel created by Cambridge Analytica for the Trump campaign. youtube.com/channel/UCRvnu…
The channel, with the handcuff logo, is referenced by CA's Mark Turnbull in Channel 4 Dispatches undercover filming 
The "Defeat Crooked Hillary" channel's videos have had more than 3 million combined views.
There's also a Facebook group which spread messages suggesting Hillary would rig the election and was too close to Putin!
The FB group was run by the "Defeat Crooked Hillary PAC". Media contact was Hogan Gidley. Today he's White House Deputy Press Secretary.
The "Defeat Crooked Hillary PAC" was run by David Bossie, who left after a few weeks to become Trump's deputy campaign manager
The PAC was funded by... Cambridge Analytica's owners, the Mercers. It later became the Make America Number 1 PAC.
CA was running internet operations for both the SuperPAC and the Trump campaign, while being owned by the SuperPAC's donor.
Coordination between a Presidential campaign and a SuperPac is illegal. Was CA effectively coordinating and breaching election law?
One more note on this: The Facebook group seems to have been very low-reach, but a few of the YouTube vids got 100k+ views
