On Wednesday, Twitter user 161ausbildung shared a picture he took at an EasyFitness gym in Güstrow, Germany.
Läuft bei EasyFitness in Güstrow. Wegen "Terrorgefahr" keine Personen mit Migrationshintergrund mehr aufnehmen. Dre… https://t.co/DWBDC94wg7
"I runs at EasyFitness in Güstrow. Because of 'terror risk' they will not take in people with migrant background any more. Dirty racism."
The sign said that the gym would no longer welcome "citizens with migrant background."

The picture was met with anger from people on Twitter.
#Rassismus kennt keine Grenzen, widerlich diese abartige Begründung. https://t.co/ZmKOwaI0r3
"#Racism knows no boundaries, this absurd reasoning is disgusting."
WTF EasyFitness? https://t.co/lyUEUlz4LP
Easy Fitness: Easy Daily Rassismus. Unfassbar widerlich. https://t.co/9VK06Z1uqz
"Easy Fitness: Easy Daily Racism. Incredibly disgusting."
Some people decided to contact the gym, asking if proof of ethnicity was now needed.

Following the anger, the gym published a statement on Facebook saying it welcomes "all kinds of people."

BuzzFeed News reached out to the gym, which confirmed that the flipchart is genuine.
The gym did not answer any further questions.
This post was translated from German.