A pink toy unicorn soaked in blood, abandoned ice cream and countless bullet holes haunt the scene of a mass shooting in a crime-ridden California city where three kids and a 21-year-old were killed Saturday.

The tragic harrowing images exclusively obtained by The Post were taken at a small business complex in Stockton where a tot was celebrating her second birthday in a banquet hall called Monkey Space before the deadly gang-tied violence erupted.

“I witnessed a woman pull up on the side of the street and just run, yelling, ‘My baby! My baby! My baby!’ ” shaken local resident Brent Terill told The Post on Monday.

A bloodied plastic unicorn from the party could later be seen laying just inches from a pool of blood left by one of the victims of the horrific massacre , which claimed

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