Tech executives say they are working hard to fight disinformation, but lawmakers and critics say they simply aren't doing enough.

Nearly half of the scams originated on social media.

Policymakers have been applying pressure to social media giants to hold back the tide of disinformation.

YouTube has struggled with scammers taking over channels to spread cryptocurrency scams before.

In practice, YouTube's decision is similar to Facebook's move against the president last week.

Trump's activity was the extension of a long and ultimately dangerous line of public comments.