Political and religious extremism are twin problems of the 21st century.

These vices are being fueled by mass media technology which helps to propagate misinformation and outright falsehood.

A report by the World Economic Forum is asking the United States technology companies - Facebook and Twitter - to be more aggressive in tackling extremism and political misinformation.

World Economic Forum is a Geneva based nonprofit organisation.

The study, which was released on Monday ,adds to a chorus of calls for Silicon Valley to stem the spread of violent materials from Islamic State militants and the use of their services by alleged Russian propagandists.

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Facebook, Twitter and Google will come under the microscope of U.S. lawmakers on Tuesday and Wednesday when their general counsels will testify before three U.S. congressional committees on alleged Russian interference in the 2016 U.S. presidential election.

The report from the World Economic Forum’s human rights council warns that tech companies risk government regulation that would limit freedom of speech unless they “assume a more active self-governance role.”

It recommends that the companies conduct more thorough internal reviews of how their services can be misused and that they put in place more human oversight of content.

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