Via The Sun:

SHOCKING video shows the moment pro-police and counter-protesters got into an ugly altercation during dueling protests over the weekend.

The violence broke out during a pro-police “Back the Blue” rally in Fort Collins, Colorado, on Saturday.

Video shot during the event captured the moment tensions between the two groups boiled over as a group of men who apparently attended the rally approached a group of counter-protests dressed in black.

As the two groups approached a ditch, a fight broke out among the groups with people scuffling on the ground, punching each other, and spewing obscenities.

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