Here, so now you have a couple of examples, BHM.

Twitter admits bias in algorithm for rightwing politicians and news outlets
This article is more than 2 years old

Home feed promotes rightwing tweets over those from the left, internal research finds
Dan Milmo Global technology editor
Fri 22 Oct 2021 08.04 EDT
Last modified on Mon 25 Oct 2021 05.26 EDT

Twitter has admitted it amplifies more tweets from rightwing politicians and news outlets than content from leftwing sources.

The social media platform examined tweets from elected officials in seven countries – the UK, US, Canada, France, Germany, Spain and Japan. It also studied whether political content from news organisations was amplified on Twitter, focusing primarily on US news sources such as Fox News, the New York Times and BuzzFeed.

The study compared Twitter’s “Home” timeline – the default way its 200 million users are served tweets, in which an algorithm tailors what users see – with the traditional chronological timeline where the most recent tweets are ranked first.

The research found that in six out of seven countries, apart from Germany, tweets from rightwing politicians received more amplification from the algorithm than those from the left; right-leaning news organisations were more amplified than those on the left; and generally politicians’ tweets were more amplified by an algorithmic timeline than by the chronological timeline.

theguardian.com - Twitter admits bias in algorithm for rightwing politicians and news outlets