As any psychologist could tell you (and I'll do so gratis), the reason you don't "recognise the accusation" is because you're not an outsider looking in neutrally, you're someone using language to make your point precisely without considering how it might be read by others. That signifies one of three things:
1) That you don't care that your post may be offensive.
2) That you're very clumsy in your language use because of poor understanding of language use, or
3) Because you are indeed a racist.
It's only hurtful if the insult can be made to stick. If you're confident that your arguments hold water, and you're able to substantiate them, then the label WON'T stick.
In other words, you're making arguments - setting forth points etc.
I'm not pouncing on "any dissent". People (even Casually Red ffs) have made decent arguments that while I don't agree with them, are possible interpretations of events. Your posts, on the other hand, are just you using those events to reiterate your opinions on immigration - opinions you were rightly pulled up for on at least one previous thread.
I don't make any such assumption, but I would note that structurally the opinions of British Asians and Black Britons have less traction than those of white Britons.
Speak for yourself. For some of us, our compassion isn't selective, and we help people wherever and whenever we can. It's called "solidarity".
You're mistaking a supposed right to free speech with a personal right to say what you like, however foolish, inflammatory or ignorant it is. We all have a right to speak freely, but it only extends as far as that. There's no licence to offend without being taken to task for the offence given.
Thus showing that you're still missing the point.