UNDATED  - Religious congregations across the United States are concentrating on safety like never before following a season of violence, from the slaughter unleashed in June by a white shooter at a historically black church in Charleston, South Carolina, to the killings this month in San Bernardino, California.

The Council on American-Islamic Relations says 2015 is shaping up as the worst year ever for U.S. mosques. Preliminary 2015 data collected by the civil rights organization found 71 reported cases of vandalism, harassment and threats, with 29 of those incidents occurring since the Nov. 13 assaults in France.

The Anti-Defamation League, which works to secure Jewish sites, has been organizing safety training around the country with other faith groups.

Christian churches have been refining their security plans ahead of receiving some of their largest crowds of the year for Christmas.

The Federal Emergency Management Agency has been holding specialized training for congregations for "all hazards, including active shooter incidents."