To make them sound like a native English speaker you could say Would you like me to show you how frustrated I am right now? The city has been sleeping for many years, only time will wake them to this injustice and force them to make a stand. I am not even slightly intimidated by you. I don't understand how people could think that his message is biased when it clearly isn't.

Would you like me to demonstrate the frustration I am feeling right now? - OK The city has been sleeping in fear for many years; only time will help them to wake and stand up against injustice. (Change "asleep" to "sleeping", "awake up" to "wake", and comma to semicolon.) I am not even slightly intimidated by you. - OK Diplomacy is an important skill to have when dealing with conflicts. - OK I don't understand how people think that his message contains bias, which it doesn't. - OK

Would you like me to demonstrate the frustration I am feeling right now? - OK The city has been sleeping in fear for many years; only time will help them to wake and stand up against injustice. (Change "asleep" to "sleeping", "awake up" to "wake", and comma to semicolon.) I am not even slightly intimidated by you. - OK Diplomacy is an important skill to have when dealing with conflicts. - OK I don't understand how people think that his message contains bias, which it doesn't. - OK