Donald Trump Jr. exploded on Hollywood actor James Fonda Wednesday, blasting the “sick individual” after he viciously suggested Barron Trump should be kidnapped and held in a “cage” over his father’s immigration policies.

The President’s oldest son slammed Fonda on social media just hours after he posted his outrageous threat, saying “rather than attack an 11 year old like a bully and a coward why don’t you pick on someone a bit bigger.”

“You’re clearly a sick individual and everyone is an internet badass but rather than attack an 11 year old like a bully and a coward why don’t you pick on someone a bit bigger. LMK,” tweeted Trump.

According to a spokesperson for the First Lady, the Secret Service was notified of Fonda’s vicious tweet and are actively investigating the posting.