There are reasons you might invite someone with an agenda, a powerful point of view, or controversial opinions. However this can attract unwanted attention from several directions: from troublemakers, from the opponents of the troublemakers, from the media who are looking for a shock-horror story, or even from the police or other authorities. So if you decide to go ahead, give some thought to how you will manage the situation.

Reasons for inviting a controversial speaker:

• You agree with what they say
• They put forward a point of view that many people agree with and therefore should be heard and considered
• They have a powerful case that should be considered
• They are experts in the field although their views are controversial
• The speaker may not personally be aggressive or offensive; they or their views may be disliked by members of your community but you feel they deserve a fair hearing
• They are well-known and would draw a big audience
• It would help get people going, shake them up a bit, challenge them
• You want them as balance or contrast in a panel
• Others have requested the speaker
• The event would create a big impact

Consider, however, if this might also be the case:

• Although you agree with them, this might not meet the needs of your audience or community
• They might cause genuine distress, offence, or anger
• If they are unpopular, they could be treated abusively by your audience
• If the situation becomes emotive or aggressive, it will prevent constructive debate
• It might compromise your overall aims or transgress your principles
• They might attract people who can behave destructively  whether their fans or their enemies; or worst, both turn up seeking or creating an ugly confrontation
• They, the audience they attract, or the reactions generated might go beyond your control
• It could damage your reputation or that of your organisation
• It might violate university or student union policies
• It could attract negative attention or publicity or media reaction, which may be inaccurate, hostile, and blown out of proportion
• It might lead to a crackdown or restrictions on your activities or your organisation
• It might lead to people not attending your events anymore
• They might step across the line and violate current legislation on glorification of terrorism, incitement to hatred, or religious discrimination