Sentence:  In fact, most of the hubs of Lagos's night life from the last century have disappeared. Mr. Adé's own Ariya nightclub closed in 2003, when <WSD>agbero</WSD> boys (local hoodlums) started extorting the visitors and vandalizing their cars. 
Meaning of the word marked with <WSD> tags:  thug, typically a jobless male youth who threatens tourists