When you take a job in politics at the highest level, you open yourself up to public criticism in any setting except the privacy of your own home. This isn't anything new and liberals have been accosted by Republicunts in this manner as well.
His response was disgusting because she is a native born American citizen and he presumed her to be from somewhere else because she's brown.
Furthermore you twats do realize that Facebook and smartphones with video have only gone into widespread use during the Obama presidency? This kind of dissent has been around forever, you're only just seeing it posted online now because - duh!