WASHINGTON — Rest easy, everyone. A year after President Trump’s inauguration, Twitter claims it has solved the problem of Russian disinformation that plagued the 2016 election by playing — and according to Twitter executives, winning — this round of the game of Whack-a-Troll.

In a Friday afternoon post updating users on its review of the 2016 election, Twitter touted its removal of 3,814 accounts and associated posts from the infamous St. Petersburg troll factory known as the Internet Research Agency.

Facebook has similarly issued several statements this month about planned changes to address disinformation on its platform. Both companies have employed strong language to condemn the use of their platforms for spreading lies; Samidh Chakrabarti, the head of Facebook’s civic engagement team, admitted that Facebook was “far too slow to recognize how bad actors were abusing our platform.”

It’s refreshing to see that these companies have finally realized their culpability in the spread of online disinformation. But their solutions to the phenomenon overlook homegrown purveyors of it. The companies have misplaced their focus in the fight, concentrating too heavily on removing Russian content while ignoring the problematic articles and posts created and shared by American outlets and users.