If someone attempts, against your will, to inject you with anything, be it claimed to be vaccination or otherwise, you are justified in escalating to lethal force if necessary to defend yourself.
If you so defend yourself and you are taken to court and put on trial, with the argument that laws stipulate that you do not have the right to so defend yourself, then the jury is justified in using what’s called “jury nullification” to nullify these unjust laws and find you not guilty.
I am willing to so defend myself in such a situation, I’d be willing to form or join a militia to protect others from such a threat, and I’d nullify any such unjust laws.