Peer reviewed or not, that seems like a huge number. I'd guess (no peer review, LOL) that the number is more like 5%, which is still unacceptably high.
Most people are too busy or too lazy to develop a coherent historical, social, and economic view for themselves, and instead depend on media and friends for their opinons. Garbage in, garbage out.
Leaked video from a Google conference held in the wake of the 2016 Presidential Election shows the company's co-founder comparing Trump voters to 'fascists'. The footage, obtained by Breitbart, also shows the company's executives vowing to halt the rise of populism and urging employees to console one another after the election result. The damaging video pours further doubt onto Google's claims of political impartiality just a few days after it was accused of trying to boost Latino voter turnout to help Hillary Clinton.
Google co-founder Sergey Brin can be seen on stage in front of hundreds of employees saying he was 'deeply offended' by Trump's election and that it 'conflicts with many of Google's values.' (Excerpt) Read more at dailymail.co.uk ...
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ANALYSIS Media reports revealed that Google tried to boost Latino voter turnout to help Hillary Clinton during the 2016 presidential election.
This is an In-Kind Political Contribution by a publicly-held company.
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That 20% jumped out at me, too. I find that very hard to believe. Seems like that is more likely to be Democrat-peer-review created to dispirit conservatives.