By Vassia Barba Joe Biden attacked Donald Trump expressing anger over alleged derogatory remarks about fallen soldiers, labeling him a threat to democracy. The US President strongly criticized Donald Trump during a fundraiser in Nevada on Sunday, expressing his frustration over reported comments by the disgraced former US President about fallen American soldiers. Biden mentioned his late son, Beau, who served in the Delaware National Guard in Iraq and passed away in 2015. Biden revealed his struggle to control his temper around Trump, particularly in response to allegations that Trump referred…