Donald Trump claimed President Joe Biden’s “base” won’t let him support police, alleging that’s why he did not attend the funeral of slain NYPD officer Jonathan Diller, RadarOnline.com has learned. Diller, 31, was tragically shot and killed in Queens during a routine traffic stop — leaving behind a wife and son. The murdered cop had a two-day wake on Thursday, March 29. During a Fox News interview on the same day as the wake, Trump expressed his disappointment over Biden’s absence at the event. He stated, “I think that politically he can’t support the police. I think he’s also making a mistake…