Angela Merkel is an German politician and former research scientist. She has been the chancellor of Germany since 2005.
Ghost has been frequently critical about Merkel, because of her unsuccessful attempts (and lack thereof) at stopping the ongoing migrant crisis, laws and acts that breach freedom of speech such as prosecuting people for anti-migrant and anti-Islam comments and her being a woman in power. Because of this, Ghost has frequently encouraged Germans to throw her out of power.
Ghost also uses Angela Merkel as a prime example against the feminist notion that if women were in power, the world would be a better place.