Indian lawmakers want to question Facebook Inc. about extremist posts on its platform.

Opposition members of Parliament are acting following an article Friday in The Wall Street Journal that detailed what current and former Facebook employees said was a pattern of favoritism toward the ruling Bharatiya Janata Party and Hindu hard-liners.

Shashi Tharoor, a member of the opposition Congress party who heads Parliament’s information-technology committee, wrote on Twitter Sunday that the committee would seek input from Facebook on “safeguarding citizens’ rights” and preventing misuse of social-media platforms. It wants to ask the company about reports of favoritism and what it plans to do about hate speech, he wrote.

In a letter to Facebook Chief Executive Mark Zuckerberg Tuesday, Congress party General Secretary K.C. Venugopal said the party has demanded a parliamentary probe and called on Facebook to investigate its India operation, to make transparent “all instances of hate speech” on the platform in recent years, and to consider changing the India operation’s management team.

Separately, Aam Aadmi Party spokesman Raghav Chadha, who chairs the peace and harmony committee of the Delhi Legislative Assembly, said in a television interview Monday the committee would summon Facebook’s senior management.