The antiterror law, which gives judges the right to extend pretrial detention almost indefinitely, has been among Mr. Modi’s most repressive tools.
During the prime minister’s tenure, the number of cases filed under the antiterror law has surged. More than 8,300 people have been arrested and jailed in the last five years, according to official data. There are no reliable official statistics about the use of the law before 2014, but legal experts say the number of cases was negligible.
The government told Parliament in August that only about 2 percent of cases registered under the law from 2016 to 2019 resulted in a conviction. But even without a conviction, people detained under the law can be jailed for years before their cases go to trial.
“It appears that in its anxiety to suppress dissent and in the morbid fear that matters may get out of hand, the state has blurred the line between the constitutionally guaranteed right to protest and terrorist activity,” the Delhi High Court said in a hearing in June that resulted in the release on bail of Ms. Narwal and two fellow activists.
“If such blurring gains traction,” the court continued, “democracy would be in peril.”
Kanchan Gupta, a government spokesman, defended the law, saying it helps the government ensure the “security of its citizens and protect them from adversaries of the nation.”