NEW YORK — The Anti-Defamation League’s (ADL) study of anti-Semitism in the U.S. shows a 14 percent decrease in incidents during 2012, the second consecutive year of a downward trend. Overall the ADL counted 927 anti-Semitic incidents — including assaults, vandalism and harassment — down from the 1,080 incidents reported in 2011. Abraham H. Foxman, the ADL’s national director, called…