Have you discussed the Holocaust with your own DC and DGC?
We host, mostly young, travellers from different countries, but usually from Europe and I have been made aware that the Germans are sick of living with the guilt. One girl, aged 20 who we are very fond of as she has stayed with us several times, says we in the UK are obsessed with the war, war films and where the Germans are constantly shown as the baddies.
I hope you are not right if you think that Brexit, if it happens, will cause a wave of misplaced patriotism and the rise of the extremists.
Everything we can do to avert this happening is good including encouraging multi cultural youth groups, United Nations, organisations such as Town Twinning, cultural exchanges, teacher and student exchanges, whatever it takes. to develop and encourage international friendship and understanding.
Some of the groups I am or have been involved with are;
servas.org/
www.helpx.net/
woodcraft.org.uk//
I recommend all of them.