Then, can you strike first in self defense?
Can I claim self-defense if I hit someone first? Even as the first person to use force, it's possible to act in self-defense. If a reasonable person would think that physical harm is in the immediate offing, the defendant can typically use reasonable force to prevent the attack.
One may also ask, can you press charges if you hit first? However; if someone hits you first and you respond by jumping on top of them and beating them to a bloody pulp with your fists, or picking up an object and hitting them with it, then you can be charged with assault.
Keeping this in consideration, can you claim self defense if you start the fight?
Generally, people cannot claim self-defense when they are the ones who instigated the fight, although there are some exceptions. The fan has a good self-defense claim, because the other person was about to hit him, and people are allowed to use self-defense to prevent an imminent attack.
How many times can someone hit you before it's self defense?
There's no number. If someone has initiated non consensual violence against you, you act until they are no longer a threat. If you punch them once, and they go down and out, you stop punching. It's no longer self defence if they're no longer a threat.