Thirty students from New York University School of Law disrupted a Paul Weiss recruiting event Tuesday evening—marking the third time in a month that aspiring lawyers from an elite law campus have targeted the firm over its representation of ExxonMobil in climate change litigation.

It’s the latest sign that the law student-initiated #DropExxon campaign against Paul, Weiss, Rifkind, Wharton & Garrison is spreading. Harvard law students held the first protest Jan. 15, followed by Yale students Feb. 6. Protest organizers are already circulating a national pledge in which signers vow not to interview with the firm for summer associate positions or work there until the firm drops Exxon as a client. And they say they hope to see more direct confrontations with the firm in the run-up to the summer’s on-campus interview season and are in talks with students at other law schools.