Thursday's top 5 headlines: what you need to know

A tie vote by the Supreme Court Thursday blocked President Obama’s immigration plan that sought to shield millions living in the U.S. illegally from deportation, effectively killing the plan that would become one of his central legacies. Britons from the far Scottish isles to the tip of Gibraltar began casting their ballots Thursday in a historic referendum. After months of bitter campaigning that sharply divided the country over questions of immigration and identity, election day dawned with a cliffhanger: Final polls showed Britons almost exactly split over whether the country should exit the 28-member European Union. German police shot and killed a gun-toting man Thursday after the masked attacker stormed a movie theater and opened fire, police said. No moviegoers were killed, but as many as 25 people were injured by tear gas, local media reports state. The Supreme Court placed new limits on state laws that make it a crime for motorists suspected of drunken driving to refuse alcohol tests. The justice ruled on Thursday that police must have a search warrant before requiring drivers to take blood alcohol tests, but not breath tests. The U.S. Supreme Court on Thursday upheld the affirmative action program at the University of Texas at Austin, ending a prolonged legal battle. A Texas law guarantees admission to the university for students in about the top ten percent of the graduating class of any Texas high school. Remaining spots are filled with applicants who are considered for other factors, including race.