Ultranationalism can turn into ultranationalism through blaming other groups for national failures, vilifying them as profiting from problems or working with enemies, dehumanizing them through racial theories, and isolating them physically and socially. The Nazi regime used these steps against Jewish people in Germany and occupied territories. They imposed laws restricting Jewish rights, isolated people in ghettos where starvation and disease killed many, then deported survivors to concentration and death camps where mistreatment and murder eliminated most of the remaining Jewish population in Europe. Over 6 million Jewish people were killed during the Holocaust.