In 1968, Robert F Kennedy, a leading candidate for the Democratic nomination for the presidency of the United States, was shot by Sirhan Sirhan, a 24-year-old Palestinian-Jordanian, allegedly in retaliation for his support of Israel following the 1967 Six-Day War.
55 years later, and Kennedy’s son Robert F Kennedy Jr is glorying antisemite Roger Waters, a man who supports the Sirhan Sirhans of the world*:

And boy, is Waters enjoying it.

“Blown away” almost seems apt.
So much for celebrating Israel’s birthday.

If he thinks Roger Waters is a hero, looks to me like Robert would rather there was no Israel.
*Robert F Kennedy Jr actually believes Sirhan is innocent!
Updates:
29/5/23 9:10 Kennedy Jr has clarified his position and deleted his tweet praising Waters.