(Image credit: Pavlo Gonchar/SOPA Images/LightRocket via Getty Images) Less than a week after the release of an ADL report accusing Steam of "normalizing hate and extremism in the gaming community," US Senator Mark Warner has sent a letter to Valve boss Gabe Newell asking what the company is doing to combat the rise of extremist content on the platform, and warning of further "scrutiny" from the government if Valve doesn't play ball."It has been brought to your attention before that extremist id...