A supporter of President Donald Trump showed up to Google headquarters and asked to speak with corporate officials about a perceived anti-conservative bias — and he left angry that he had been denied a meeting.

Conservative gadfly Ben Bergquam and other Trump backers walked around the Google and Facebook campuses Thursday recording livestream video and demanding answers about how the tech companies present data to consumers, reported KAIL-TV.

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“Stop the leftist propaganda, stop censoring conservatives,” Bergquam shouted on a Facebook Live stream as he toured Google. “We’re on public access. Stop the leftist propaganda, guys. Anybody want to make a comment on the collusion between Google, Facebook, Twitter, YouTube? The collusion to undermine our country, anybody? Anybody want to make a comment on the collusion to undermine our country and our president?”

Google employees mostly ignore Bergquam, a social media activist who frequently records video of himself engaging in tense confrontations with political opponents, although a few wave him off.

He then went to Facebook headquarters to complain about his social media page being removed, although both his personal and activist organization Frontline America accounts are now active.

President Donald Trump and other Republicans have complained lately that social media and tech companies discriminate against conservatives by burying their sites in search results.

“If they can make your post appear on the third or fourth page, you’re basically invisible,” said Bergquam, who runs the Frontline America website.

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Google insists its search algorithms are not influenced by political ideology, but conservatives don’t believe them.

Bergquam and other sign-carrying activists wearing “Make America Great Again” hats showed up at the two California companies demanding answers from company executives, and complained loudly when they were denied and security guards asked them to leave.

“They weren’t expecting us to come, I think they were irritated that we were there,” Bergquam said.

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Bergquam promised to return Friday with an even larger group of activists.

“The companies that were founded on this idea of free exchange of ideas have become the thought police,” he said.