http://www.nytimes.com/interactive/...ion=click&contentCollection=meter-links-click provides a listing of people, places and things that Trump has insulted in Twitter
I'm pretty sure this isn't the whole list. I'm also sure that he made fun East/South Asians at least once in the last 3 months.
Before the internet age, he had insulted many people as well; foremost among them Ronald Reagan. altho his campaign has often present him as the heir to Reagan, Trump had hurled these insults at the former president. Besides calling President Reagan a con man, Trump took out ads in national newspapers criticizing his U.S. foreign policies. In a 1991 interview, Trump, while expressing confidence in President George H.W. Bush, criticized Reagan for driving up the country’s deficit. Trump also called tax policy changes passed under Reagan in 1986 , a “disaster.”