isolated misbehaviour

Good editorial in the Taipei Times today, lists the various "isolated incidents" of police misbehaviour since Ma's taking office [as Mr. Ma]:

1. Nov. 3, 2008: Law enforcement officers and possibly plain-clothed national security agents break into a room occupied by DPP councilors at Taipei's Grand Hotel without a warrant.
2. also Nov. 2008: Police ordered the closing of the Sunrise Records music store in Taipei during Chinese envoy Chen Yunlin's visit.
3. March 12, 2009: An 18 year-old student was taken away by police, questioned for half an hour and had his fingerprints taken for shouting "Step down" at President Ma Ying-jeou.
4. A family member of a 228 Incident victim was questioned by police over her plans for taking part in a memorial.
5. and now (as VftH noted yesterday):
DPP councilors Chien Yu-yen (簡余晏) and Yen Sheng-kuan (顏聖冠) alleged the city's Department of Police had sent two officers to a private gathering organized by the Taiwan Blogger Association on Saturday. The officers then asked the participants to show their IDs and provide them with their cellphone numbers.
An eyewitness said two officers informed them that their superiors wanted to know who was taking part in the gathering, what they were doing and whether all the participants were bloggers.

What's happening to Taiwan? Since when do ordinary citizens have to provide police with information about private gatherings?

In response to the Taipei City councilors' questions, the director of the police department's security office, Tsai Wan-lai (蔡萬來), said he was not clear about the details of the incident, adding that it could have resulted from "the young policemen's lack of skills." Any personnel found guilty of misconduct would be disciplined accordingly, he said.
What exactly did Tsai mean by "lack of skills"? Does his explanation mean that the officers in question were not disciplined for violating civil rights but for being clumsy? ...