Before George Takei won fans and praise for his work on Star Trek, he and his family were detained in a Japanese internment camp during World War II. Japanese Americans were deemed to be a threat to national security during the conflict, and FDR's decision to intern them remains a dark spot on American history.
Today, Takei wants to make sure the same fate doesn't await Muslim Americans. President-elect Donald Trump campaigned on the idea of instituting a Muslim registry and barring certain Muslim immigrants from coming to the U.S., and a former spokesperson for a PAC that supported him said the Japanese camps could serve as legal "precedent" for the suggested registry. In response, Takei has started a Care2 petition to "Stand Up for Muslims in the U.S.," garnering more than 46,000 signatures as of Tuesday afternoon.