The turbulent national debate over race, gender and free speech consumed the normally staid Senate on Wednesday after the GOP majority voted to silence Sen. Elizabeth Warren, abruptly elevating her celebrity status at a moment when liberals are hungry for a leader to take on President Donald Trump. The highly unusual rebuke of the Massachusetts Democrat came as the Senate weighed Trump’s choice for attorney general, GOP Sen. Jeff Sessions of Alabama, who secured confirmation on a nearly party-line vote Wednesday evening.