A fourth prototype of SpaceX’s next generation heavy lift Starship rocket exploded in a towering fireball after a brief engine test firing on the Texas Gulf Coast Friday, destroying the test vehicle and its firing stand.  On this sad occasion, President Trump tweeted, “I knew it! Beto stirred – and surely SMOKED – the pot in Boca Chica today.  Protesters ignited the engine on the test rocket and caused the explosion, just like in Minneapolis.  StarshipGATE!”