Can't remove front lights

I'm trying to remove the front parking/marker lights to replace the bulbs. I recalled it being as simple as removing one screw in the top then sliding the whole thing forward. But I've taken the screw out and the fitting won't budge (I even cracked the plastic trying).

Am I doing this wrong? Or are they (botth??!!) stuck, and if so, how to I unstick them?

yeah they pop out after you got that one screw off. They can be hard to get off but they will pop straight out towards the front of the car.

I ended up prying them out. Discovered the front "pin" is metal that apprently oxidizes, getting firmly stuck in its plastic socket. The rear pin is plastic, and breaks off easily - great!