What do you think the/an answer to the latter question is? I notice that the Danish Socialist Group Left Unity has donated money to the PYD, which seems to be a real act of practical solidarity:
http://www.europe-solidaire.org/spip.php?article33208
This is not something I have looked into, but I understand that the PYD has links to the PKK which is designated a terrorist organisation under UK law which makes it an offense to provide material assistance to such groups. Could individuals be prosecuted for donating to it? Are there alternative sources to donate your money to?