NEW MILFORD — What began as a routine disturbance call turned into wrestling, racist comments, blood spitting — and the threat of AIDS — after a New Milford man antagonized police as they responded to a Fourth of July pool party, police said.

Richard Mastrolillo appeared in state Superior Court in Bantam last Wednesday charged with felony assault of a police officer, and two misdemeanor charges, after, police say, he headbutted them, threatened them and spat blood at them.

Police arrived at a home on Long Mountain Road after dispatch told them of 911 calls complaining of a boozy pool party and a fight between a man and a woman, court documents said.

Their spat with Mastrolillo, 43, began when he screamed at police as they interviewed the pool’s owner. Police weren’t sure what Mastrolillo wanted, documents said, adding that officers became worried about Mastrolillo when he ignored their efforts to talk, and yelled more — and louder.

One officer, unsure if Mastrolillo’s baggy T-shirt could be covering weapons, tried to handcuff Mastrolillo and pat him down, police said.

Mastrolillo headbutted an officer, and was then tackled by all three cops, documents said.

Masrolillo said that when he was speaking to an officer, the other two officers tackled him from behind. He didn’t headbutt anyone, he said, adding that his head made contact with an officer because he was being tackled by the other two.

“I never intentionally hit any officer,” Mastrolillo said.

Police say Mastrolillo then called them several variations of the N-word and the F-word, among other terms.

According to documents Mastrolillo graced police ears with:“F—— you, c—s.”

As police wrestled Mastrolillo to the ground, Mastrolillo got a nose bleed, documents said.

The 43-year-old then spat his blood at police while “kicking at everything,” documents said.

Mastrolillo, while spitting blood, called one officer the N-word, and added “now you have AIDS ... all you ... will have AIDS,” documents said.

Mastrolillo was placed in a cruiser, where he continued his “rant” and demanded he be taken to a hospital, police said.

An ambulance, with police on board, took Mastrolillo to New Milford Hospital, where he was treated for scraped knees and a bloody nose, documents said.

Mastrolillo said that he never yelled anything about AIDS, and that he didn’t even have a bloody nose. He thinks the police are being disingenuous, he said.

He was released on a $10,000 bond. His next court appearance is Sept. 7.

blytton@hearstmediact.com; 203-731-3411; @bglytton