Trump's vile racist ban on people travelling to the US from six Muslim-majority countries and his ban on refugees has been met with a mighty movement of opposition from US workers and young people.
And it's not only in the US that people are taking to the streets, as we saw most recently on International Women's Day. His presidency threatens working class and oppressed communities all over the world. It's a scandal that Theresa May has invited this bigot to Britain to speak.
But the Tory government is also guilty of racism and of blocking refugees, while pursuing wars and 'regime change' in Syria and the Middle East which have created a massive humanitarian crisis.
Many equate Trump's right-wing populism with Brexit. Of course, during the EU referendum the official and the Ukip-led Leave campaigns whipped up anti-migrant feeling, but so too did the Tory Remain campaign.
Unfortunately, the late switch of Jeremy Corbyn to a pro-EU position meant that an independent, working class socialist opposition to the bosses' EU was not heard.
Since Brexit, and Trump's election, there has been a steep rise in racist attacks. However, at root, the vote to exit the EU was not primarily against immigration. For many, Brexit represented a rage against austerity and against a corrupt establishment which benefits the super-rich.
We fight for better terms and conditions for all - including a £10 an hour minimum wage, mass council house building, nationalisation of key industries and rejection of EU directives that attack workers' rights.