. >> we spoke to our political correspondent, peter craven, about the continuing strength of pegida marcheser very harsh criticism from chancellor merkel in her new year's address. >> it's interesting. certainly, there were forthright words from chancellor merkel in her new year's address that people should not attend the type of demonstrations we are seeing in dresden. she believes there are too many people in these protests that, as she put it, "have hatred in their hearts." this was the 11th protest of its kind we saw in dresden. it began with a smattering of people. now we have 18,000 people. that number could rise, still. it's very worrying, given we just entered a political year where i think it is fair to say that internationally across europe and germany all sorts of tough questions surrounding issues like refugees and asylum-seekers migration and immigration, will be very close to the top of the political agenda. add to that that there was a survey in germany toward the end of last year, according to which as many as 13 percent of people in germany would attend marches like the one

. >> dw peter craven was attending the ceremony. he told us about what he heard their -- heard there. >> the ceremonies have been taking place today. you can see some of the barracks from the camp still illuminated. it has been a remarkable day. we've had testimony from three survivors. they have been the heart of what we have seen today. other survivors actually in tears, weeping. the message was clear from all three survivors. it was especially in light of the holocaust experience. more recent events, such as the french capital in paris, never stand idly by when industrious -- injustice is being perpetrated. never be a bystander. >> the history is challenging especially with auschwitz where the nazis tried to cover up. >> enough evidence emerged eyewitness accounts, film footage, and photos. >> auschwitz. the name is synonymous with a murderous ideology. in this place, one billion people -- one million people were killed. they were shipped from all over. women, men, the elderly. children. most victims were jews. but roma and homos