On every last Friday of the month the city of Porto Alegre in the state of Rio Grande do Sul , Brazil , holds its own critical Mass event , but on February 25 , 2011 , a tragedy occurred ; Guilherme Valadares from the blog Papo de Homem ( Man Talk ) explains :
Viernes tukuya febrero phaxsinxa , aka Porto Alegre marka estado de Rio Grande do Sul , Brasil , tuqinxa aka Masa Crítica tuqinkirinakaruw jiwayawaypxatayna , , ukatsti aka patunk phisqhani febrero pä waranx mayani maranxanja , utjawayiwa ukxa mä chijiw sasaw sawayapxatayna . Guilherme Valadares del blog Papo de Homem ( Charla de hombres ) explica :