We saw the flying shoe on the news, followed by a certain president's trademark look of bewilderment. I wonder what part of "widows and orphans" he didn't understand.
Once upon a time in South America, Richard Nixon, as US vice president, was spat on in Venezuela by an angry mob quite capable of killing him. "I Like Ike" Eisenhower, then president, reneged on a scheduled visit to Japan after his press officer's car was mobbed and attacked by citizens of usually mild-mannered Tokyo.
In both cases, there was no denying any understanding of the message nor was there any gratuitous mauling of the messengers.
Speaking of shoes, does anyone else remember the USSR's Khruschev at the UN? Instead of getting mad, or looking bewildered, the US at the time pulled up its socks and got its act together. Could that possibly happen again?