A few thoughts on the matter and pray for peace.

As we all know, Buddhism rejects arguments fate, destiny and sufficient reasoning. Buddhists believe that the law of causality does not proceed in an active way moc.hanh machine tihen individual and collective action of many friendly people, plus household power of the Buddhas, bodhisattvas, the gods kindness can bring unexpected results are natural targets, target crime, reach for an actual purpose. I think that awareness of effective security for such rituals, there is nothing contradictory causal morality of Buddhism. Of course prerequisites of ritual for peace with the result that the parties and the part of the applicants must have a correct understanding of physical causality. Accident to the family is not random. It is the inevitable result of the ripe immoral behavior in the past. But if the litigant litigant family and sincerely repent, according to abandon evil good, and invited the monks to pray for peace ceremony, for the blessings of the Buddhas, Bodhisattvas and the angels, and do a lot of charity Buddha is like releasing, broad charity, donations etc ... Three Jewels and vow merit of the good, the Buddha that for parties, family parties victims from the ear, then the ear energy consumption, reducing ear is not there.
karma is the power of karma. The main strength of past evil deeds have brought accident in the current family. However, the present work, such as the Buddha, the friendly, Mass Police are now friendly with natural power consumption, reduced ear. I have to say to the blessings of the Buddhas, Bodhisattvas and the angels. Having said that there is a conflict with the Buddhist doctrine or not? It should be understood that, Buddhism says no one supreme god, created the world's universe, arranged according to their intention all things in this world etc ... Buddhism rejects the notion of a Divine Beings Supreme such flexibility, but acknowledged Buddhism Buddhas and Bodhisattvas are enlightened sages and rescue, regular household living beings, guide them abandon evil to do good, the path forward to enlightenment and liberation. At the same time, Buddhism admits many angels protect you, bless those who take refuge in the Three Jewels, often do good, the good. As the scriptures say how often the great 25 angels upholding, protecting those who take refuge in the Three Jewels, do good, good thing. The household that is what in Buddhism is often called inconceivable ( inconceivable ), meaning that the location is inconceivable.
In summary, the main contents of the ritual for peace, as the both parties and sincere repentance, healing abandon evil, as many Buddhist and the like releasing friendly, giving, donations etc ... Tam told her merit for the ear, from the victims. Also invited the monks to conduct rituals for lawful police, chanting, Buddhist concept. Rite so simple, does not last long. It is important for parties and family who sincerely repent, abandon evil, to do good. For ceremonial requiem, should also simple but solemn, avoid all unnecessary thrill, can make the body by the action shadowy, anxiety, difficulty Ultra Pure born or reborn in the realm of healing . If possible, reduce crying, presentation drawings should not lead trumpet music, the drums, the parliamentary process waste ... that is all the more complex forms, flaunt. Much less should open partying, killing cattle, pigs and chickens, say drug and gambling accumulated. Instead all forms of absurd and useless, so invite monks to recite the Buddha, chanting, doing a lot of charity and the Buddha, such as releasing, giving, donations etc ... Triple Gem and all who attended the ceremony were the center of sanctifying merit Buddhist and improve it for the souls of the dead are super Pure born, or born God, living in the realms of healing.
Mass for peace, and pray also be held at the temple, where the quiet landscape, makes the content of the ritual in more efficient parts.
 All Buddhists we should mind this: Buddhism is the most important word you mind , as long as keep good heart, sincerity, the ritual is always bring the desired effect. And as the mind has not improved, heart failed, then leaned review ritual, costly and ineffective much anything.
 If done properly it, we will create an environment that is a true humanist spirit of Buddhism, aims to spiritual progress, enlightenment and liberation. That is the motto of the right to contribute to building a healthy living environment and good as the Buddha taught in business Dhammapada : "Do not despise evil, For that not to themselves, as water dripping , then also filled bottle, filled with evil stupid people, Do contained gradually. " "Do not blame the good contempt, For that not to themselves, as dripping water, and then filled jar, place filled with friendly people , Do contained gradually ... END=VIETNAMESE TRANSLATE ENGLISH BY=THICH CHAN TANH.THE MIND OF ENLIGHTMENT.WORLD VIETNAMESE BUDDHIST ORDER=VIETNAMESE BUDDHIST NUN=GOLDEN LOTUS MONASTERY=THE EIGHTFOLD PATH.AUSTRALIA,SYDNEY.8/2/2015.