Sympathise with the sentiment but your anger / resentment is a little mis-targeted. Romania is part of the EU so they are legally entitled to come here for work and don't need to stow away on any trucks to do so. Much as I believe that open borders was a mistake, I cannot hold it against any of the Eastern Europeans who want to come here in search of a better life for themselves. Many Brits have done exactly the same to NZ, Australia, Canada & The US over the years.
The illegal immigrant question is an entirely different one. They too need to be curbed but having seen the misery, hunger and poverty that many Africans and Middle Eastern people are trying to escape first hand (whilst in the sevices) I can't begrudge or resent them wanting a better (and safer) life for them and their families either. Most of them have walked thousands of miles and risked life and limb (many dying en route) to reach European shores, do you think they'd do that if they had any other choice?