Yes, it is generally illegal to search through someone's bag without their permission as it violates their right to privacy and property.
No.
Yes
Yes. It doesn't matter if you make money off of it or not. If you use someone else's music without their permission it is ILLEGAL.
Yes, it is illegal to tow someone else's car without their permission.
You can't. And shouldn't.
It is generally not illegal to take screenshots without permission, but sharing or using those screenshots without permission may violate privacy or copyright laws.
Not if you have their permission, or the permission of their guardian if they are under age. If you are going to go into the business of cutting hair, it is probably illegal without a license.
Yes, it is illegal to send unsolicited emails without permission, as it violates anti-spam laws.
Downloading copyrighted material without permission is illegal and constitutes copyright infringement.
No, it is illegal for someone to enter your property without permission.
Yes, it is illegal to go through someone's mail without their permission. This is considered a violation of federal law and can result in criminal charges.
Yes, it is illegal to enter someone's house without permission. This is considered trespassing and is a violation of the law.