My gay atheist neighbors put a flashy bright gay lawn ornament on their lawn & it shines in my wndow at night?

Me and my boyfriend told them to take it away because its too bright and we cant sleep at night since it shines into our window and they leave it on all night. But they said that they wont remove it because its their lawn. We tried closing the curtains but it still shines enough light into our room to cause a disturbance. What should we do to resolve this situation politely? Please no rude answers or i will report you as soon as i see you being rude thank you and have a nice day