Trofim Lysenko's campaign against genetics and biology during the era of Stalin and Khrushchev is one of the great tragedies of modern science. In the purges that Lysenko (1898-1976) instigated, even the greatest of Soviet scientists were not safe. Only in 1964, when Khrushchev fell from power and when massive crop failures revealed the emptiness of the peasant-scientist's theories, did Lysenko lose favor. Even now, his long shadow stretches over the countries of the former Soviet Union as they deal with the disastrous consequences of Lysenkoist policies on science, agriculture, medicine....
From Lysenko and the Tragedy of Soviet Science
by Valery N Soyfer
Sorry, that's not evidence.
Educate yourself, please.