Tommy Robinson delivers banned right-wing activist's speech
Sellner was banned from entry by the UK government earlier this month, for daring to lead a right-wing organisation which sheds light on Islamic extremism and mass migration on the continent of Europe.
Robinson - formerly of the Rebel Media - delivered the speech to thousands who gathered in the snow at the historic Speaker's Corner, the home of free speech in London for hundreds of years.
Far-left people call us right-wing, people who want to shut free speech down call us 'fascist', and folks who hate their own culture call us 'racist'.
Marx, Lenin, Orwell, and others have famously given speeches at Speaker's Corner, which is what drove Sellner and Robinson to pick the spot to deliver the speech (below).
Thousands listened to the speech live in person, while tens of thousands watched online.
Robinson told Breitbart London: "The true battle for free speech started today. This is just the start.
"The public have to support free speech so I want to say a personal thank you to everyone who spent their hard earned money and time travelling to London today."
The event was mostly peaceful, though a handful of Muslim counter-protesters attempted to shout Robinson down, leading to a few scuffles. Breitbart London understands there were a handful of arrests, and also sectarian Muslim-on-Muslim scuffles.