Glasgow had been warned that the knifeman was violently unhinged and angry the night before the bloody rampage.Ako Zada, who campaigns for refugees’ rights, claimed many residents had recently been moved from private accommodation to hotels.He said it meant all spending money was taken from them and they were given three meals of a poor standard each day.The “dehumanising” and “humiliating” conditions had left some residents depressed, Ako added.And he claimed he heard from those staying at the 91-room hotel that one resident had threatened serious violence against reception staff.Ako, of the Kurdish and Scottish link group Zados, said: “I was told that the hotel had been warned that one man had been pushed over the edge and was a great.