Sunday’s second assassination attempt against Donald Trump revives the era of assassination that existed in the United States in the 1960’s and 1970’s. We as a nation failed then to completely understand the problem and take steps to end it, and we are now repeating those tragedies. The government under both political parties has refused to release all the assassination records, or seriously study the earlier assassinations for lessons learned. In addition to protective measures, the government should engage in complete transparency related to our experience with political assassination.