VIENNA—More than 40,000 people marched through Vienna on Saturday to protest against a lockdown and plans to make vaccinations compulsory to curb the coronavirus pandemic. Faced with a surge in infections, the government last month made Austria the first country in Western Europe to reimpose a lockdown and said it would make vaccinations mandatory starting February. People carried signs saying: “I will decide for myself,” “Make Austria Great Again,” and “New Elections”—a nod to the political turmoil that has seen three chancellors within two months—as crowds gathered. “I am here because I am against forced vaccinations. I am for human rights, and the violation of human rights should be stopped,” one protester told Reuters Television. “We are protecting our children,” said another. Around 1,200 police officers were deployed to handle scattered protests that merged into a march on the central Ring boulevard. Police put the size of the protest at …