A Martial Art

If you happen to be Jewish (as I am), you should study a martial art, as it seems we are all wearing bullseyes right now, and we would be well-served to make ourselves a hard target. Krav Maga is a good option, if you have a competent instructor nearby, but any training is better than none at all. Brazilian ju-jitsu from the Gracie school is also excellent, particularly for grappling. If it is legal in your locality to carry a firearm, seek the necessary training and licensing if required and have the means at hand to protect your family. Finally, rally with your Jewish neighbors, fellow congregants at temple or synagogue and learn to recognize and how to deal with threats both to individuals and more broadly to the Jewish community.