Social media site Reddit on Monday shut down r/The_Donald, the largest pro-Trump forum on its site, isolating Facebook in its reluctance to enforce content rules against Trump's hateful and violent rhetoric.

Other sites also conducted high-profile sweeps: Amazon.com Inc's live-streaming platform Twitch temporarily banned Trump's official channel, saying it violated Twitch's policy on hateful speech, while Google's YouTube suspended six leading white nationalist accounts.

Reddit Chief Executive Steve Huffman said in a post detailing changes to the company's content policies that communities and users promoting hate would be barred. Reddit was banning about 2,000 subreddits, the majority of which were inactive, he said.

In response to the actions by Reddit and Twitch, a Trump campaign spokesman directed people to Trump's campaign app "to hear directly from the president." He did not directly address the sites' actions.

Huffman said earlier this month that Reddit would strengthen its content policy, after Reddit co-founder Alexis Ohanian resigned from the firm's board and former CEO Ellen Pao criticized its handling of r/The_Donald.

Social media companies' content policies have been in the spotlight this month, as Facebook Inc. faced an employee walkout and an ad boycott over its hands-off handling of inflammatory posts amid nationwide anti-racism protests and ahead of the 2020 election in the November. 

Earlier this month, Twitter Inc. began placing some of Trump's messages behind warning labels, while Snap Inc. said it would no longer promote Trump's account in its Discover section.

YouTube said Monday it was terminating six accounts widely credited with building support for far-right views online over hate speech violations, including channels run by Richard Spencer, Stefan Molyneux and former Ku Klux Klan leader David Duke.

Twitch, a site primarily used for video game livestreaming which Trump joined in October, said it had identified two streams from Trump's account that violated its policies.

One was a rebroadcast of a 2016 rally in which Trump said Mexico was sending rapists to the United States. The other was of his rally in Tulsa earlier this month, when he hypothesized about a "very tough hombre" breaking into a woman's house.

A Twitch spokeswoman said the platform had told "the president's team" last year that there were no exceptions on the site for political or newsworthy content that broke its rules.

In May, Twitch announced a new advisory council to improve safety, focusing on areas like harassment and protection of marginalized groups. 

(With input from Reuters)