Even the world's richest law firm can't ignore a hashtag these days—especially one that threatens to limit its access to top talent.

Kirkland & Ellis gave critics of mandatory arbitration provisions a reason to be grateful just before the Thanksgiving holiday, when the country's top-grossing firm announced it would no longer require associates and summer associates to sign mandatory arbitration provisions to work there.

In making its decision, Kirkland was bowing to a nearly two-week campaign organized by a Harvard Law School student group, The Pipeline Parity Project. The campaign, which adopted the hashtag #DumpKirkland, encouraged law students to boycott the firm during the upcoming summer associate recruiting season unless it nixed the arbitration clauses from its employment contracts.