Never Again and the ethnic groups at risk

Today, the United Nations marked another Holocaust Memorial Day with a never again pledge.  There are a great deal of minority groups across the world at risk of any one form of ethnic cleansing.  For the moment, I want to ask your opinion about the Roma community in Europe.  They face difficult challenges despite several countries leading Decade of Roma Inclusion programs.  I remember a while back reading that the Roma were most at risk in Europe of being the next minority group to be systematically targeted.  What say you?