You won't get harassed for not being all dressed up. It's not like you're going to be sitting on the jury that day. It's just selection and rejection.
Also if you personally know or are related to a member of law enforcement, make sure to mention that when they're asking questions. Pretty sure way of not getting picked without having to do something ridiculous like saying you're racist.
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"I couldn't stand a day without a past or future. I need to live each moment to keep fighting here and now."