Tesla's European sales dropped by nearly 50% in April despite overall EV sales growth in the continent.The backlash against CEO Elon Musk's actions, including endorsing the German far-right party, has led to protests and impacted Tesla's sales globally.Competitors like BYD have overtaken Tesla in Europe, posing a new challenge alongside the increasing competition in the EV market.Tesla's brand crisis in Europe is deepening, with sales decline pointing towards ongoing challenges despite the release of the updated Model Y.