TikTok videos that "glorify" the violence of Russian mercenaries in Ukraine have been viewed more than a billion times on the social media app, misinformation monitors have said. One of the clips appears to show the October execution of Yevgeny Nuzhin, a former Russian mercenary with the Wagner Group who had switched sides. Wagner is a private military company with suspected links to the Kremlin and is understood to be fighting alongside Russian troops in Ukraine. NewsGuard analysts say they identified 160 videos on TikTok that "allude to, show, or glorify acts of violence carried out by the Wagner Group,…