Rainbow flags typically go unrivaled at the nation’s LGBTQ Pride marches. But this year, another symbol has played an outsize role in the annual celebrations: the Palestinian flag.

Waving red, white, green and black, hundreds of pro-Palestinian activists have disrupted some of the nation’s largest Pride parades this month in protest of the Israel-Hamas war and the tens of thousands of deaths and untold suffering it has caused since October.

In Philadelphia, pro-Palestinian demonstrators…