Viriathus, leader of the Lusitanians (now Portuguese) and previously honoured as "a friend of Rome" was executed/assasinated on Roman orders. When the perpetrators came to collect, the Roman consul Servilius Cipianus ordered their execution saying: "Roma proditores non pendit" (Rome does not pay traitors). With the death of Viriathus, Lusitanian resistance waned and Lusitania was romanized and lost its language.
As Karl Marx wrote “Hegel remarks somewhere that all great, world-historical facts and personages occur, as it were, twice. He has forgotten to add: the first time as tragedy, the second as farce.”
http://en.wikipedia.org/wiki/Victor's_justice
http://en.wikipedia.org/wiki/Viriathus