Practical question: Should I not present the Torah viewpoint because of threats of violence?

Update:see How Debbie Gross "saved" me from being abused at the Convention

I just received this letter from the organizer of the Conference on Abuse where I will be speaking at the beginning of December in Jerusalem. I replied that I still plan to show up. My view on these matters is  the mainstream view of the majority of poskim - no chumros.  Any thoughts?

Rabbi Eidensohn

Shalom u’vracha.

I am writing you concerning your email of a few weeks ago as to whether we will have some form of bodyguards at the conference to protect the speakers against “hecklers”.  Unfortunately, we do not have any funds or way to provide any form of protection to the speaker.  In these difficult security times in Jerusalem, we are hoping just to stay safe from the arab terrorists who seem to be everywhere. 

I would like to alert you to the fact that we have been receiving numerous emails over the past week, from agunot and their families concerning your views and blogs about agunot and the use of the internet.  These emails have been very aggressive and threatening.  I would like to alert you to this fact so that you can reevaluate whether you are prepared both emotionally and physically to deal with what seems to be a large amount of angry participants who are specifically coming to the conference to denounce you and your views.  I am taking their anger quite seriously and relaying such to you.  I hope that you are prepared to deal with their anger and aggression.  I would like you to take all of this into consideration prior to coming to the conference.  I will certainly understand should you decide that this is not the right platform for you at this time.