A woman has been arrested in the southern state of Tamil Nadu for calling India's ruling Bharatiya Janata Party (BJP) "fascist".
Sofia Lois made the remark when she saw BJP politician Tamilisai Soundararajan, who then filed a police complaint.
The incident occurred on Monday at an airport in the state and a video of the two women arguing soon went viral.
Ms Lois was released on bail on Tuesday.
Her lawyer told BBC Tamil that she was asked to apologise. When Ms Lois refused, Ms Soundararajan filed a complaint against her for causing hurt and inconvenience.
Ms Soundararajan told The Indian Express newspaper that she felt "threatened" by Ms Lois.
"No innocent girl will use that word. I questioned her. She replied that she has the right to freedom of expression. She shouted 'down with BJP's fascist government' and raised her fist. I thought I shouldn't ignore a terrorist and filed a petition," she is quoted as saying.
A student in Canada, Ms Lois was visiting her family in Tamil Nadu. She and her parents had taken a flight from capital Chennai (formerly Madras) to Tuticorin city. The altercation occurred after they arrived at the Tuticorin airport.
"After we landed, Sofia saw the BJP leader and said 'fascist BJP government down, down'. She didn't utter a word other than that," Ms Lois's father told local media.
The arrest has prompted outrage online and many have condemned it on Twitter.
"Fascist BJP government, down, down."— Nilanjana Roy (@nilanjanaroy) September 4, 2018
Totally wrong - and foolish! -- of the BJP to arrest a student, Lois Sofia, and focus your mind on her slogans.https://t.co/0OmE8WsdSF
Tamil Nadu student arrested for shouting "Fascist" at a BJP leader. Except for the politician and the police, the irony is visible to all.— Sachin Kalbag (@SachinKalbag) September 4, 2018
Since when did shouting against a government become a ‘crime’? Can someone please send a copy of the constitution to TN cops and the TN BJP chief please? https://t.co/HX5MWCkdS6— Rajdeep Sardesai (@sardesairajdeep) September 4, 2018
Dear BJP, the best way to show that you are NOT fascist is by NOT arresting students who shout that you are fascist.— Aisi Taisi Democracy (@AisiTaisiDemo) September 4, 2018
According to local reports, Ms Lois had initially been sent to judicial custody for 15 days.