At least 50 false narratives have been launched this way since last fall, according to a count NBC News assembled with researchers. The narratives aim to diminish Western support for military aid in Ukraine following Russia’s invasion, a contentious issue in Congress. The videos also back the re-election of Donald Trump, who has pledged to halt military aid to Ukraine, while painting the former president as a victim of a “deep state.” And they attack Vice President Kamala Harris.