Simplify the following text for a Grade 8 native English-speaking person.
Original: It denied the existence of the Holocaust , claimed that the USA built the gas ovens of the Dachau concentration camp after the War and that films of concentration camps were faked .
Simplified: The SRP also said that the Holocaust never happened , and that the ovens of the Dachau concentration camp were built by the United States after 1945 .