article_snippet: but that is not the only time," Negussie said.
article_snippet: There are many of us who have those stories.
article_snippet: When CNN asked for videos or photos, Negussie said members are reaching out to witnesses.
article_snippet: he asked witnesses to come forward and pledged to punish any members found to have been involved.
article_snippet: We continue to seek any information or eyewitnesses to the incident," he said.
article_snippet: CNN's Elise Miller contributed to this report.