Here is a concise original summary based on the information published by the source. German ministers vow tough response to Frankfurt riots and looting ReutersGermany blames infiltrators as Gen Z protests turn violent CNNGerman rioters loot shops as 'Gen Z' demos turn ugly RFIGermany news: Gen Z group calls for new protests DW.comRioters smash, loot storefronts amid cost of living protests in Germany CBS News For the full context and any later updates, use the original source link.