You can sue the person. However, does the person have significant assets to collect from? I handled a similar case and obtained a default judgment against the defendant. Nothing happened for many years in my efforts to collect but the person recently got a job and I am garnishing his wages. The amount per check is small and it will take forever to collect the entire judgment.
Yes you can sue. A personal injury attorney could help. Just understand going in that such attorneys want to make a wage so they usually look to insurance proceeds for compensation. With an assault, there may be no insurance so unless the assailant has money, you may have challenges finding counsel who is willing to work without a set fee arrangement.
You are permitted to sue to recover damages but there are some important considerations to evaluate. First, you must realize that there is a statute of limitations of one year for assault. A statute of limitations is a time period by which you are required to commence an action and, if you fail to do so, you will be unable to sue. Here, you must realize that you are required to commence legal action within one year from the date on which the assault occurred. You should therefore consult counsel as soon as possible so the attorney has sufficient time to evaluate the case and prepare the lawsuit sufficiently in advance of the one year deadline. There are certain instances in which a criminal case is pending related to the same incident and a conviction in that case could extend that time but DO NOT rely upon this because there is no guarantee of a conviction and by the time you find out, it could be too late. Bottom line - you have one year from the date of the incident to commence legal action.
The fact that the individual had you arrested is less important than what the disposition of that arrest was and, more importantly, what the video surveillance you made reference to shows.
You will also have to consider the fact that insurance will hardly ever cover intentional conduct like an assault. I do not know the extent of your injury. Generally speaking, the more significant the injury, the higher the damages award. However, even if you win the case and obtain a large award, you will likely not see any of it unless the individual you are suing has money. You may wish - if there is time - to evaluate the assets of the targeted defendant before actually commencing suit.