There are no two ways about it: giving a speech on a controversial topic is a daunting task. One thing that can help is to focus on why you’re giving the speech. Maybe you’re spreading the word for an organization you care about, or maybe you’re emotionally connected to the topic. Either way, you have a strong reason for being there. You’re bound to be very knowledgeable about and strongly committed to the topic; otherwise, you wouldn’t have been asked to speak about it. This passion and sincerity will shine through in your performance and make it highly convincing. Lastly, anticipate any possible counter-arguments and objections, and plan your responses carefully.