Born in Dingolfing, Bavaria, he is a member of the far-right Alternative for Germany (AfD) party.
[2] In 2019 he was involved in controversy after funding and supporting a memorial in Poland honoring German soldiers in WWII and the Nazi paramilitary organization Volksdeutscher Selbstschutz.
The construction of the memorial was partially initiated by the neo-Nazi organization Junge Nationalisten which is being monitored by the German intelligence services.
Polish courts started an investigation against Protschka for supporting Nazism and defamation of victims of the Holocaust.
[3][4] In 2024, Protschka agreed to pay a 12,000 euro fine in exchange for prosecutors dropping charges related to his calling Bavarian state premier Markus Söder "a traitor to the country" and "Södolf" at a political event in 2023.