Gun control proponent David Hogg is pushing a boycott of mutual fund companies invested in firearm manufacturer stocks. This follows his boycott of Fox News’s Laura Ingraham, which resulted in her initially losing advertisers and apologizing to him only to have her viewership jump 20 percent. Now Hogg is targeting BlackRock, Vanguard Group, and a few other mutual fund companies for holding gun manufacturers’ stock in their mutual funds. Hogg tweeted: