Park and deride!

Hotheaded state Sen. Kevin Parker told a state GOP operative to “Kill yourself!” on Twitter Tuesday after she publicly accused him of misusing his official parking placard.

Parker — who was forced to undergo anger-management treatment after bashing a traffic cop in 2005 and also tussled with a Post photographer in 2010 — tweeted the message at state Senate GOP spokeswoman Candice Giove when she pointed out his state-

issued parking placard was in a car parked illegally in Manhattan.

He gave a halfhearted apology on Twitter, saying it was a “poor choice of words” — and then promptly doubled down in attacking Giove, a former Post reporter.

As the controversy unraveled, Parker groused to the Albany Times Union that Giove was a “Twitter troll” — before trolling her himself on Twitter for her previous role as spokeswoman for the breakaway Independent Democratic Conference.

“@Candicegiove is on the wrong side of history for every important issue facing New York State!” Parker tweeted.

The Brooklyn lawmaker claimed his remarks weren’t that bad and said the scandal was a “tempest in a teapot.”

“I’m sure people in my district don’t care,” he said. “Come on, people don’t care about that.”

One person who did care, however, was Flatbush Councilman Jumaane Williams, who booted Parker as co-chair of his campaign for public advocate.

“I’m very concerned by the statement I saw from Senator Parker on social media earlier today,” Williams said in a statement. “After speaking with him this afternoon, we have both agreed that it’s best for him to step down as co-chair of my campaign for Public Advocate.”

Republicans and Democrats alike slammed Parker for the outrageous comment.

“I was disappointed in Senator Parker’s tweet,” incoming state Senate Majority Leader Andrea Stewart-Cousins (D-Yonkers) said. “Suicide is a serious issue and should not be joked about in this manner. I am glad that he has apologized.”

Ironically, Parker sponsored a bill in 2017 that would boost suicide-prevention education on New York college campuses.

The 2005 photographer-slugging incident cost Parker his leadership position and committee assignment at the time — along with his $22,000-a-year stipend for the positions.

But Stewart-Cousins told The Post she will not punish him by yanking his new assignment to the Senate’s Energy and Telecommunications Committee.

Current Senate Majority Leader John Flanagan (R-LI) called Parker’s tweet “reprehensible.”

“These words are beyond the pale and beneath the state Senate,” he said.

Melissa Mark-Viverito fumed, “This is horrendous. Shame on Kevin Parker for his vile language — and for blocking a bike lane in the first place!”

Parker declined to comment to The Post outside his Brooklyn home Tuesday.

Additional reporting by Shari Logan and Isabel Vincent