The poll found 50% of Democrats approve of how Biden has navigated the conflict while 46% disapprove — and the two groups diverge substantially in their views of U.S. support for Israel. Biden’s support on the issue among Democrats is down slightly from August, as an AP-NORC poll conducted then found that 57% of Democrats approved of his handling of the conflict and 40% disapproved.
I don’t have any hard data on this but I felt like the 2014 Gaza War was a turning point. It’s the first time I really remember a narrative change in America. The traditional media, government officials, etc. were as pro-war and pro-Israel as ever but civilians in Gaza were sharing dramatic photos and videos on social media.
Europe has always been much less radical on that issue. But I remember that around 2010 or so, the Palestinians definitely ramped up their communication efforts towards the international media. So that probably had an impact.