Police clash with protesters outside AfD meeting

German police clashed with protesters outside a national convention held by the far-right Alternative for Germany (AfD) party. The scuffles occurred as the AfD convened for its national meeting. The article states that police engaged in scuffles with demonstrators. The specific location and timing of the convention and the protests are not detailed beyond the fact that they took place concurrently. The reason for the protests is not explicitly stated in the provided content, only that protesters were present outside the AfD's meeting.