I hate my friends that like to RUN when they see cops and we're doing something weed related. It's like you might as well hold up a sign while you're running saying "OMG IM DOING SOMETHING ILLEGAL LOOK AT ME IM A FUCKING IDIOT". Just play it cool and walk past them or away from them for christs sake. And I'm sure running from cops that are searching for people using illegal fireworks is plenty of probable cause.