Unfortunately, America has a long history of political assassinations starting on January 30, 1835 when Richard Lawrence attempted to assassinate President Andrew Jackson.
Quoting from the web site I linked above, "Nine American Presidents - Andrew Jackson in 1835, Abraham Lincoln in 1865, James Garfield in 1881, William McKinley in 1901 Harry S. Truman in 1950, John F. Kennedy in 1963, Richard Nixon in 1974, Gerald Ford twice in 1975, and Ronald Reagan in 1981 - have been the targets of assassination. Attempts have also been made on the lives of one President-elect (Franklin D. Roosevelt in 1933) and three Presidential candidates (Theodore Roosevelt in 1912, Robert F. Kennedy in 1968, and George Wallace in 1972). In addition, eight governors, seven U.S. Senators, nine U.S. Congressmen, eleven mayors, 17 state legislators, and eleven judges have been violently attacked."
Obviously, that web site will have to be updated to 10 U.S. Congressmen and 12 judges. History also shows that the vast majority of the assassins have been nutjob fucksticks with no definitive political orientation. So Sheriff