I am English born and bred but I really think you are clutching at straws here. The truth is that this thread is pointless, sorry but it's true, no matter what you write you are just opening yourself up for abuse here as lots of people don't like England in the same way that lots don't like Ireland and Poland etc it's just the way things are.
I suggest you come up with a different thread about how well England treats it's Polish population and why they should be happy to live in such a place rather than what you are doing because believe me you will get a whole lot further than just saying "Polish should go home if they don't like England" this makes you sound a tab stupid.
No offence intended.
I'm proud to be English and I wouldn't have it any other way.