CriticKitten said:
Recruit the bronies to hold up signs saying "Love and Tolerance" and "God thinks ponies are cool". Then go around through the crowd offering free hugs, and as you hug, be sure to whisper "I'll love and tolerate the shit out of you" REEEEEEEEALLY close to their ear.
Try also: "Lemurs like to masturbate in public;" "Adult elephants can't jump;" "Angles are from the southern end of Denmark;" "Saxons are from south-east of Berlin;" "The Welsh are the real Britons;" "Red hair isn't really an Irish trait;" "The duck-billed platypus finds its prey by tracking the electrical signature of the shrimps' heart-beats;" "Basking sharks only eat plankton and krill;" and of course: "Apart from my underwear, I'm completely naked under my clothes."
If you're going to do the speaker thing, bear in mind that most speakers are designed to send sound out into a room, and thus could disturb the funeral you're trying to protect, and it'd be better and more respectful to restrict the sound to a smaller area ...
... so you should build your own reflectors and really FOCUS the 3kW output of those speakers. I'm sure xkcd [http://xkcd.com/316/] could help with the design and even some ammunition [http://xkcd.com/368/] but the basic idea's pretty old and pretty simple, having supposedly been used by Archimedes:
Got to love the fact the cameraman walked right through the beam at 0:59 then turned the camera towards the mirrors.
With sound from speakers rather than sunlight, you don't have to adjust for time and can aim more precisely.
If you don't like the Macarena, try something soothingly religious:
If you don't like the religious numbers, try this:
... or for something wrist-slittingly long-winded:
It's better like this:
... but you don't want to be nice to them!
I was tempted by "The Power Of Love" but I think telling them to Just Walk Away is funnier ... and it's a better song.