This is called self defense, but what is the question? Also, by "indirectly", you probably mean "inadvertently' or "unintentionally". Perhaps you should re-submit your question for a better answer.
To protect themselves if someone swats at them
A wide-brimmed hat would be recommended for someone who wants to protect themselves from spider raindrops.
People who cannot protect or defend themselves, from the age of newborn to age 14 most children will not be able to protect themselves from harm. Also old people who are fragile cannot protect themselves as someone who would be middle-aged.
Dont share needles, and be smart .. use protection
Because law is not meant to protect people from themselves.
ability to not answer a legal questionAdded: To protect someone from being coerced into giving incriminating testimony against themselves
The easiest way to protect yourself from online predators is to not expose yourself to them. You can ensure this by not using chat programs and by maintaining your internet security software constantly.
In the "Diary of a Wimpy Kid" series, the only way kids could protect themselves from the cheese touch was to touch someone who already had it, thus passing it on. If someone had the cheese touch, they were considered "infected" and avoided by their peers until they could pass it on to someone else. The cheese touch was a humorous and exaggerated concept representing social ostracization.
dogs bark because they are either scared because they don't know someone, or trying to protect themselves and their owner.
A human being an do many different things to protect themselves. Have some sort of safety protection with them at all times or even be sure there not alone. Always go somewhere with someone else.
Landlords have a responsibility to themselves to check everyone out that they rent to to protect themselves. The last thing they want is to rent to a criminal, drug dealer, or someone who may default on their rent.
Assuming you are talking about Arthur Miller's The Crucible, Elizabeth does not know that John has already confessed his lechery. She is attempting to save him because she assumes someone else has accused him of doing so.