In a second case, a 14-year-old female who drew a chalk flower onto the Lennon Wall on 23 December 2014 was arrested on suspicion of criminal damage, detained by police for 17 hours, and then held against her will in a children's home for 20 days, but was never charged with any crime. A magistrate decided in favour of a CPO pursuant to a police application, deeming it "safer." The incident created uproar as she was taken away from her hearing-impaired father, and was unable to go to school. On 19 January, another magistrate rescinded the protection order for "Chalk Girl" () after reviewing a report from a social worker. The handling of the situation by the police raised concerns, as there was no explanation as to why the police failed to locate and consult a social worker before applying for the order in accordance with proper procedures. The controversy gained international attention, and The Guardian produced a short documentary film, titled "The Infamous Chalk Girl" which was released in 2017. Use of the CPO device against minors involved in the Umbrella Movement was seen as "white terror" to deter young people from protesting and exercising free speech. In May 2015, a man was arrested, detained from 2–4 May for in excess of 48 hours and wrongfully accused of murder. The man was autistic, and the police failure to handle such a case sparked controversy. According to the police, the suspect made a written confession of an assault that contradicted severely with statements obtained whilst interviewed with family members. A nursing home later offered the suspect an alibi, corroborated with video evidence, that the man could not have been at the alleged crime scene. Civil rights activists condemned the incident which traumatised a vulnerable individual, and criticised the police procedures including not proposing legal representation, lengthy detention, an methods for obtaining a bogus confession. The police chief expressed "regret" but refused to make an apology. Also in May 2015, police procedures for conducting identity parades attracted controversy when suspects in an assault case on television reporters were allowed to wear shower caps and face masks during an identity parade, ostensibly to cover distinctive features, leading to the police abandoning the case due to insufficient evidence. The police stance was confirmed by the new Chief Commissioner. In mid-September 2015, media reported that the police had made material deletions from its website concerning "police history", in particular, the political cause and the identity of the groups responsible for the 1967 riots. Mention of communists and Maoists were expunged: for example, "Bombs were made in classrooms of left-wing schools and planted indiscriminately on the streets" became "Bombs were planted indiscriminately on the streets"; the fragment "waving aloft the Little Red Book and shouting slogans" disappeared, and an entire sentence criticising the hypocrisy of wealthy pro-China businessmen, the so-called "red fat cats" was deleted.