Russian President Vladimir Putin wasn’t kidding about cracking down on LGBT rights. On Sunday, four Dutch filmmakers were arrested under the country’s new “gay propaganda” law. Signed by Putin on June 30 after passing unanimously in the State Duma, the measure bans both private and public expressions of support for gay rights deemed to be accessible to minors and prescribes fines of up to 100,000 rubles ($3,000) for violations. The filmmakers, who came to the country earlier this month to shoot a documentary about gay life in Murmansk, were taken into custody after police went through their footage and found an interview with a 17-year-old gay man (a minor under Russian law). While the foursome was fined for visa violations and let go, it is the first instance of the anti-gay law being enforced against visitors to the country.