Caroline Kennedy is “living in fear” that if her controversial son, Jack Schlossberg, runs for Congress, he could “become a target for violent haters,” sources told The Post.

“Caroline has pleaded with Jack not to run, but he seems determined to follow in the political footsteps of his grandfather [President John F. Kennedy] and generations of other Kennedys who have held political office,” one insider reveals.

Schlossberg — a progressive Democrat with a combined following of around 1.6 million on social media, where he’s earned a reputation for his bizarre rants — is expected to announce a run for the Manhattan congressional seat held for more than three decades by retiring “liberal lion” Jerrold Nadler , 78.

In September, Schlossberg, 32, disclosed he was forming an exploratory c

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