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As it was charged, you don't have to worry about sex offender issues. Since you do not have a criminal record
you stand a good chance at getting it reduced to an infraction. The officer actually did you a favor by not charging something more serious. Even if you are convicted of the Public Nuisance charge, it won't seriously affect you. That's not something educational institutions and all but the most perfectionist employers would care about.
Still, hire a lawyer so you get the best result you can. It is even possible that with community service you can get this dismissed as a conditional plea with the prosecutor with the right person negotiating for you.
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