This is the best summary I could come up with:

Days after he was deported from Switzerland, Martin Sellner, a leader of Austria’s ethno-nationalist Identitarian Movement, posted a video of himself on X reading out a letter to his lawyer that he said was from authorities in the city of Potsdam.

A spokesperson for the city authorities confirmed to Agence France-Presse that an EU citizen had been served with a “ban on their freedom of movement in Germany” but declined to name them for privacy reasons.

Germany has seen a wave of huge demonstrations against extremism and the far-right Alternative für Deutschland (AfD) party, some of whose members attended the November meeting in Potsdam, since reports of it emerged in January.

Sellner gave a presentation at the event, attended by neo-Nazis, other extremists and business backers, on the practicalities of carrying out the mass deportations – referred to in far-right circles as “remigration” – of migrants, asylum seekers and German citizens of foreign origin deemed to have failed to integrate.

Sellner, who received donations from and communicated with the Christchurch terrorist Brenton Tarrant before the two mass shootings at mosques in 2019 that left 51 people dead, recently had his account on X restored.

Elon Musk responded to one of Sellner’s posts in which he commented on the Swiss police decision to shut down the weekend far-right event and ban him from the region for two months.

The original article contains 442 words, the summary contains 227 words. Saved 49%. I’m a bot and I’m open source!