My point wasn't about whether he was particularly sincere in his anger, but that he demonstrated how it is possible to do anger without spluttering and shouting and so forth.

I suppose that might be a reflection of his not actually being angry at all, under it all. But often enough people who are putting on an act about being angry feel the necessity to put on the spluttering and shouting as part of the act. Sometimes even more so than people who are sincere.

I imagine George Galloway was no more and no less sincere in his anger than most other politicians dealing with issues of life and death.

"Sincerity is the key. If you can do sincerity, you've got it made". George Burns.