Police cracked down Saturday in the Malaysian capital of Kuala Lumpur as tens of thousands took to the street to demand election reform. Dozens of arrests were reportedly made and 20 police were injured, officials said. The demonstration, attended by thousands of people dressed in yellow T-shirts, was peaceful until a small group tried to get past barricades and the police responded with tear gas. The massive crowd scattered, and video showed one group overturning a police car. The police acted with “utmost restraint,” said Malaysian Home Minister Hishammuddin Hussein, though organizers said the protests were peaceful and the use of tear gas was inappropriate.