Jeremy Corbyn will lead a protest of thousands raging against President Trump in London on Tuesday after the British labor leader snubbed the president at a formal banquet hosted by the Queen.

Corbyn — who aspires to become the UK’s next prime minister — promised to “stand in solidarity” with demonstrators as they fly an inflatable diaper-clad “Trump Baby” in an effort to “resist” the US president.

“Tomorrow’s protest against Donald Trump’s state visit is an opportunity to stand in solidarity with those he’s attacked in America, around the world and in our own country,” Corbyn tweeted on Monday.

Corbyn refused to attend a lavish state banquet for Britain’s Queen Elizabeth II at Buckingham Palace in London on Monday.

The coalition of protest groups — supported by musicians Brian Eno and Lily Allen — is preparing to bring thousands to Trafalgar Square for “one of the biggest demonstrations in British history.”

“On 4 June thousands of protestors will be marching to surround Trump as he joins Theresa May on a visit most believe should never have happened,” a spokesperson for the group, Stop Trump, said in a statement.

“We will be bringing central London to a standstill. By the time he leaves he will know, and the world will know that people here reject him and his toxic politics.”