Tesla stock rose Tuesday even as new data revealed that the electric-vehicle maker’s European sales halved in April and as China’s EV industry began a new price war. Shares of Elon Musk’s car company were up 6% at $359.

Tesla sales are plummeting in Europe, down nearly 50% in April. Meanwhile, other EVs are thriving. What’s behind the drop? Political controversy, protests, and a major brand problem.