I dunno, just think about similar instances in history.... for example, New Zealand... and island, where when the white convicts were introduced... and that is exactly the same 'you and me' who would be initially used up in Mars, as guinea pig experiments too... I.e. the planet of Mars, by its very nature as an isolated piece of rock would be ideal as a place in which to throw all the excrement of humanity, rapists, manic depressive people, diseased people, poor people, coloured people.
Just imagine it, suddenly everyone left on planet earth might begin to feel like they were superior to those shipped off to Mars. My own instinct says, that Governments would just deny the existence of convicts on Mars. The trip to Mars would take about a year, and guaranteed the conditions for transportation of these convicts wouldn't be very good at all.... a bit like that film by Spielberg, Amstad.
I.e. If half died along the way, so be it. There would even be a very lucrative 'slave trade' here on planet earth to abduct people, to send on these container ships to planet Mars, to sell as slave workers, high yellows, or niggers to make Mars a 'nice and suitable' place for more civilised people to come to. Imagine just what the major space port on Mars would be like.... a bit like that place in Star Wars, where Han Solo used to drink.
Scum of the Universe, Jabba the Hutt!
All of this would be just 'covered up' by the politians of course, who would in turn by investing their own money in these entreprises of course. A new rank in society here on earth would emerge of 'super noveau riche'... who own the cartel that would become Mars and Co. Ltd. Just imagine it, whereever humans go, they bring all their rubbish, corruption and scum with them... that is a fact... and to even fool oneself for one second, that it will be just like Timber retirement villages in the Wicklow mountains, is just stupid.
Eventually, the 'Irish workers' on Mars would more than likely start a revolution against the oppressive regime from earth, and begin their very own independent planet, with all their own constitution and laws. BTW, if you really want to fill yourself in, on the notion of a brand new super state, or planet... there is a book out presently just about America and its position as a super power now... forget its name, but it should be a good read.