 While investigators have yet to find a motive, they reportedly have found Crooks wrote on a gaming platform called Steam, quote, July 13th will be my premiere. Watch as it unfolds. Fox News reports Crooks did online searches of the following this month. Trump, Biden, when is DNC convention and July 13 Trump rally. But there is still no trace of any political activism online or in private. John Stolnes, Washington. 19 after.