Conspiracy to blank requires at least one overt action, demonstrating that you intend to fulfill your commitment to blank.
We could talk about doing blank all day, make plans to blank. Draw up little blank maps and assign blank duties. Until someone actually does something, it's all just talk.
No but you still gotta prove it. That and freedom of speech is a thing.
I can say I plan to go and do any old crime, I can talk about it with my friends who might give me ideas. They might even volunteer to help.
Until someone actually does something, all we're doing is talking. We're protected by the first amendment, and it would be damn near impossible to prove we actually intended to do anything.