If it is the classic version that is free anyway on the minecraft.net site it is not illegal.
if it is the proper minecraft that has survival and you download it free it is not illegal BUT it is illegal if you play it without a payed account.
just because other people have it it does not make it illegal.
Chat with our AI personalities
Downloading Minecraft is not illegal, Although downloading a cracked version of the software is.
Downloading Minecraft for free is illegal, and WikiAnswers will not provide guidance regarding illegal actions.
You can play the demo version or Minecraft Classic on the Minecraft website.
To get Minecraft for free, you need to download it on Xbox.
You can't. It's illegal, However, you can play the free version on Minecraft's home page or download the demo. The links can be found under "Sources and related links" below this answer.