Rowdy Irish fans of Conor McGregor shut down this Las Vegas street before Jose Aldo fight (Video)

They're keeping their spirits up ahead of the big night anyway.

The UFC's official Instagram posted a video in the early hours of this morning, which shows some enthusiastic Conor McGregor fans dancing... in the middle of a Las Vegas road. The video went live yesterday evening local time, and was most likely filmed after the weigh-in for tonight's UFC 194 main event - the featherweight unification bout between McGregor and Jose Aldo. The weigh-in was preceded by a Holly Holm Q&A, which featured lots of enthusiastic Irish fans - some of whom serenaded the new UFC women's bantamweight champion. Then the party appeared to spill out onto the streets with chants of 'lets go f**king mental'.

pic.twitter.com/GB8feqsDv6

— No Anders, No Party (@A_Nice_Chap) December 12, 2015

Then they stormed a Las Vegas road and decided to stay there and have a party.

https://www.instagram.com/p/_LY8yeJJfW/?taken-by=ufc

And proceeded to rip the p*ss out of one poor police officer with a whistle trying to stem the Irish tide of mayhem and merriment.

His is when Over one thousand Irish Colin #McGregor fans meet one police bloke with a whistle pic.twitter.com/tl6MVUzBOZ — No Anders, No Party (@A_Nice_Chap) December 12, 2015