What is the consiquence for taking a picture of someone without their permission?

if you mean what ARE the consequences for taking a picture of someone without their permission there are none unfortunately. as long as you do NOT want to sell them or post them for such things as using them to make a profile trying to prostitute them

if they are in public there is no expectation of privacy, however if you plan on profiting from these photos then you need their consent

None, unless they are somewhere they have an expectation to privacy, such as in their own home, or a public restroom.