Alva Review-Courier -

Four years after Russia-linked groups stoked divisions in the U.S. presidential election on social media platforms, a new report shows that Moscow's campaign hasn't let up and has become harder to detect.

The report from University of Wisconsin-Madison professor Young Mie Kim found that Russia-linked social media accounts are posting about the same divisive issues — race relations, gun laws and immigration — as they did in 2016, when the Kremlin polluted American voters' feeds with messages about the presidential election.

Since then, however, the Russians have grown better at imitating U.S. c...