A woman in Siberia reportedly faces up to six years in prison on extremism charges for posting memes on social media deemed “insulting” by Russian investigators, part of a growing trend of Russians being punished for online activity.

Internet freedom advocates decry what they call skyrocketing government censorship under Article 282 of the Criminal Code, which targets hate speech. Russia’s Supreme Court estimated that convictions under the extremism charge more than tripled between 2012 and 2017.

Maria Motuznaya, 23, tweeted Monday that a team of investigators had raided her apartment in early May, confiscated her computer and phone and accused her of posting offensive images on the VKontakte social network, including satirical pictures of priests and Jesus Christ.

A scanned page of what Motuznaya said was a police file described one of her captions as “containing linguistic signs of the white race’s superiority over the black race.”