The problem with what you are suggesting is that what one person terms “nonsense” others deem as important issues.
This is why free speech is fundamental to a free society. Ideas should be heard and then dismissed based on their merits.
The fact is, these riots aren’t being caused by “nonsense” or social media incitement. They are being caused by decades of neglect of the interests of the working class of the country by a government who lies and gaslights them.