MoveOn has a petition to stop the appointment of Sam “Scalito” Alito to the Supreme Court. They’re trying for 250K signatures in 48 hours; please take a moment right now and go sign it.
Briefly, here’s why this matters so much:

Basic Rights for Working Families
As a judge on the Appeals Court, Alito issued a ruling to gut the Family and Medical Leave Act, which guarantees most workers up to 12 weeks of unpaid leave to care for a loved one in an emergency. The Supreme Court effectively overturned that ruling in 2003