It’s becoming clearer by the day that the Republican Party is betting that animus toward LGBTQ Americans is a big winner this election year. Now Kansas’ junior senator is taking his culture war fight to Hollywood — and making it about kids. Roger Marshall led four fellow GOP senators in sending a letter to the board of the TV Parental Guidelines — a congressionally mandated consortium that provides content ratings for television shows — asking it to update its criteria for the warnings it puts on children’s programming. Citing “parents raising legitimate concerns on sexual orientation and gend…