Indian police on Wednesday detained about a dozen demonstrators marching to the Parliament building in New Delhi to demand the release of a 22-year-old climate activist arrested over a document she circulated on social media to support an ongoing farmers’ protest. The supporters shouted “Free Disha Ravi” and “Shame on Prime Minister Modi and Home Minister Amit Shah” outside the office of the National Students’ Union of India (NSUI), a student wing of the main opposition Congress party. A heavy police presence overpowered about 40 protesters, including a dozen who were taken away in a bus. It was not immediately known whether the police were going to formally arrest them or free them later on Wednesday. Ravi, an activist linked to Swedish climate change campaigner Greta Thunberg, was arrested over the weekend on charges of sedition and remains in police custody. New Delhi police say she shared a document, dubbed a “protest toolkit” , with Thunberg, who tweeted it earlier this month, drawing international attention to the farmers’ campaign against the Indian government’s move to deregulate agriculture produce markets and open them to private players. Thunberg later deleted that post. Police say the sharing of the document on social media indicated there was a “conspiracy” behind the violence on January 26, India’s Republic Day, when the largely peaceful farmer protests erupted into clashes with police. One protester died and hundreds of police and demonstrators were injured. India goes after creators of ‘protest toolkit’ shared by Greta Thunberg A group of students from New Delhi’s prestigious Jawaharlal Nehru University held a similar protest in the Indian capital on Tuesday. Anti-government protests also hit the Indian cities of Mumbai and Bangalore. Prasenjit, a student leader who uses one name, demanded the release of Ravi and dozens of protesting farmers arrested by New Delhi police. Opposition parties called the arrests harassment, intimidation and an attack on democracy. Overseas, the niece of US Vice-President Kamala Harris, Meena Harris, criticised the government on Twitter for silencing activists. Online, supporters of the climate activists urged her release with the hashtag #FreeDishaRavi. Police also issued arrest warrants for two other activists, Nikita Jacob and Shantanu Muluk, saying the three created the document and shared it with others. A Mumbai court granted them bail and stayed their arrest for three weeks. “The court has granted her three weeks interim relief,” Jacob’s lawyer Sanjukta Dey told reporters outside the court. “There is nothing in the tool kit about violence, it is only for creating awareness about farm laws, it’s not for creating violence.” Dey said that Jacob had already been questioned by police on the document and she was ready to cooperate with them in their investigations into the events of January 26. Rihanna vs Modi government: how India’s farmer protests drew world’s eye Police said the document contained links to websites that were pro-Khalistani, a movement for an independent Sikh homeland from India called Khalistan in the late 1980s and early 1990s. Since November, tens of thousands of farmers have camped outside New Delhi and blocked highways to protest new agricultural reform laws that they say will devastate their incomes. The protests have posed a major challenge to Prime Minister Narendra Modi ’s Hindu nationalist-led government, which says the laws are needed to modernise Indian farming.