There is no any real evidence that could confirm "100000". It is just assumptions of shovinistic neo-impire Polaks mixed with moscovtian propagana.
Your govermanet not just calim but passed the law about that tells "Ukr nationalists made genocide of Polaks". For such huge actions had to be official document, order, some paper with specific instructions or something like this. But there is no any real evidence that could confirm existence of such document. So it all is just assumptions.
You are really funny giving me links from polish viki. Bullshit.
Yes, to my pity there really were murders, it is tragedy. But! You have be very careful learining that occasions, not just believe all your goverment say to you. They do it just to hold their power.
Try to find out what exatly caused to those horrible days - polonization, pacification of Ukrainians by Polaks of 2nd rech pospolita. Btw real number - not more than 50000. Plus dont forget it was mutual murders, army krayova also killed a lot of Ukrainians (including children!) And Im saying not only about Volyn. Polaks killed a lot of Ukrainians on Pidsyannya, Pidlyaschya, Holmschyna, also polaks did operation 'Visla". So dont be idiot !