But on Friday, he was advocating the revival of a policy widely considered to be among the most shameful chapters in American history: World War II domestic internment camps. Aside from the inherent problems in criminalizing people for their beliefs, Clark’s proposal (which his MSNBC interlocutor did not challenge him on) also appears to be based on the concept of targeting people for government scrutiny who are not even “radicalized,” but who the government decides may be subject to radicalization in the future. That radicalization itself is a highly amorphous and politically malleable concept only makes this proposal more troubling.