Permanently removed content from Google Groups

[guest271314]

I got 3 emails from nor...@groups.google.com saying my content was permanently removed. 

Hello guest...@gmail.com,

We're letting you know that we've permanently removed the content at https://groups.google.com/d/msg/google-chrome-developer-tools/_x88jTzSxDs/kZqnU6x6CgAJ

Why did this happen?

An external report flagged the content for illegal content or policy violations. As a result, our legal content and policy standards team removed the content for the following reason: unwanted content.

Learn more

You can learn more about our content policies and enforcement at our help center.

What you can do next

You may have the option to pursue your claims in court. If you have legal questions or wish to examine legal options that may be available to you, you may want to consult with your own legal counsel.

However, I have no idea what the content is that got removed. 

How do I find out what content was removed from Google Groups?