Rick Krajewski, an organizer for a leftist political group called Reclaim Philadelphia, convened about 30 Philadelphia activists in January at the offices of a prisoner-advocacy organization to float a radical proposal. Many of them had been instrumental in getting Krasner elected. But clearly, electing a progressive prosecutor hadn’t been enough. This time, Krajewski wanted to persuade them to spearhead a rare grassroots campaign for the typically sleepy judicial race.