unfortunately kahanist groups are quite fragmented , I think JTF is the most authentic decent one..
The JDL lost its way at one point, rabbi kahane said so himself even during his lifetime. Because an organization that promotes a head with a fist, can attract people that have a fist and no head, purely violent people. (or people that agree, but have neither).
there are no practical things going on..
my personal view is that jews if they want to learn any fighting art , can, if they learn it in a non-jewish establishment, and learn the jewish principles elsewhere. It doesn't -have- to be taught simultaneously. sitill, it brought people togeher. Nothing like that is being done at the moment. There are self defence classes taught in synagogues, but not kahanist ones.
And most oriental martial arts teach a philosophy of running away anyway.
There is more of a future in MMA
A sane person in control of an army can render the ummah useless. One doesn't need to be that -awake- to see the muslim threat. One just needs to not be blind. Many are blind.. I think they need a psychiatrist, though they'd have to admit they have a problem.