Facebook Employees to Undergo Political Bias TrainingTwitter, meanwhile, was criticized last December when it appointed a white man to be its head of diversity.

Under fire for allegedly suppressing conservative viewpoints in its Trending topics section, Facebook this week announced that it will require its employees to undergo training to check their political biases.

"We think a lot about diversity at Facebook," COO Sheryl Sandberg said Wednesday at an event hosted by the American Enterprise Institute, according toThe Hill. "And we have a managing-bias class that all of our leaders and a lot of our employees have taken that I was part of helping to create, and we've focused on racial bias, age bias, gender bias, national bias and we're going to add in a scenario now on political bias."

A company spokesperson toldThe Hillthat the training in question is mandatory for all employees.

Following allegations last month that it regularlysuppresses coverageof politically conservative news topics, Facebook said it will rely only on algorithms that scan its users' posts for an unusually high number of mentions of a particular topic. Previously, its trending topics reviewers would rely partially on RSS feeds from online media outlets, includingTheNew York Times, BBC News, the Drudge Report, and the Huffington Post.

Despite these changes and its new training policies, Facebook faces an inherent challenge in addressing political bias, since the tech industry in which it operates is overwhelmingly politically liberal. Sandberg herself, as well as Alphabet CEO Eric Schmidt,NetflixCEO Reed Hastings, Airbnb CEO Brian Chesky and many other tech heavyweightsendorsedDemocrat Hillary Clinton's campaign for president this week.

Among the few tech leaders endorsing Clinton's Republican opponent, Donald Trump, is Peter Thiel, who recently was criticized for hisrole in bankrolling Hulk Hogan's lawsuitagainst Gawker Media. He willserveas a Trump delegate.

Besides politics, Facebook and other tech companies also facerace and gender problems. The industry is overwhelmingly white and male, and multiple companies have recently grappled with how best to address that. Google in 2014 formallyacknowledgedits shortcomings by publishing employee gender and ethnicity stats, which showed that its workforce consisted of 70 percent men and 30 percent women, but only 5 percent black or Hispanic.

Last year, Intel pledged toinvest $300 millionto improve the diversity of the company's workforce. The money will go toward attracting more women and minorities for engineering and computer science positions. Earlier this year, itreported progresson that goal, but work remains. Apple has asimilar effort.

Twitter, meanwhile, was criticized last December when itappointed a white manto be its head of diversity.