Peter Hasson of the Daily Caller documents a disturbing relationship between a dubious left-wing group and major social media companies.

Four of the world’s biggest tech platforms have working partnerships with a left-wing nonprofit that has a track record of inaccuracies and routinely labels conservative organizations as “hate groups.”

Facebook, Amazon, Google and Twitter all work with or consult the Southern Poverty Law Center (SPLC) in policing their platforms for “hate speech” or “hate groups,” a Daily Caller News Foundation investigation found.

The SPLC is on a list of “external experts and organizations” that Facebook works with “to inform our hate speech policies,” Facebook spokeswoman Ruchika Budhraja told TheDCNF in an interview.

Facebook consults the outside organizations when developing changes to hate speech policies, Budhraja said, noting that Facebook representatives will typically hold between one and three meetings with the groups. …

… Of the four companies, Amazon gives the SPLC the most direct authority over its platform, TheDCNF found.

While Facebook emphasizes its independence from the SPLC, Amazon does the opposite: Jeff Bezos’ company grants the SPLC broad policing power over the Amazon Smile charitable program, while claiming to remain unbiased.

“We remove organizations that the SPLC deems as ineligible,” an Amazon spokeswoman told TheDCNF.

Amazon grants the SPLC that power “because we don’t want to be biased whatsoever,” said the spokeswoman, who could not say whether Amazon considers the SPLC to be unbiased.