Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), a 2020 presidential candidate, said Friday that tech companies have a responsibility to quickly take down hate speech, responding to reports that the shooter at two New Zealand mosques posted a manifesto and video of the massacre online.

“Tech companies have a responsibility to do the morally right thing. I don’t care about your profits, when it comes to the values, the safety, security the decency, tech companies have an obligation to the right thing," Booker said while discussing the attack, according to a video tweeted by a campaign adviser.

Cory speaks out against anti-Islamic and white supremacist-fueled violence in the wake of the Christchurch terror attack. pic.twitter.com/JS9weguukF — Matt Klapper (@mattklapper) March 15, 2019

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"This is a case where you’re giving a platform to hate," he added. "That’s unacceptable and should have never happened, and it should have been taken down a lot more swiftly. The mechanisms should be in place to allow these companies to do that."

Booker did not mention Twitter or the alleged shooter's manifesto directly in the video clip.

Twitter said in a statement to The Hill that its priority is to act as quickly as possible in situations like this and encouraged users to report content that violates its rules.

Reports emerged Friday that the suspect in the shootings, which left 49 people dead, had previously posted a 74-page manifesto online in which he expressed hostility to nonwhites and a fear of foreign "invasion."

The shooter also used a helmet-mounted camera to post live video of the attack online.

Several 2020 Democrats, including Booker, have increasingly criticized big technology corporations. Sen. Elizabeth Warren Elizabeth WarrenHarris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda Judd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report MORE (D-Mass.) has discussed invoking antitrust laws against tech giants, and Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) has regularly slammed Amazon for its treatment of workers.

Updated at 1:36 p.m.