Re: A different aikido perspective
Re soccer - there is an organization in Israel/Palestine that does bi communal work with soccer and basketball. Teams of kids from both sides get to know one another as people, and I'm told it works well.
Aikido is a real gem though for bi-communal work for a number of reasons (non-competitive, power role taking, tactile, relaxed, spiritual elements, etc), but in terms of numbers you're quite right - it's more like ripples in a pond I guess, and each community doing their bit.
All the best,