When Did The Prophet ﷺ Start Giving Dawah Openly ?
We do not accept it. There was no time when the prophet secretly preached. He always preached openly. The power he gained in Madina helped him establish his rule in the country God had made exclusive for His worship, and the polytheists had corrupted it. This pattern of eradicating the polytheists from Hijaz does not apply to other lands. Muslims are not supposed to attack them for being non Muslims. https://www.youtube.com/watch?v=HGL42TGLNtk