God knows, the kids don't
I felt sad, yes sad, seeing this picture. What do these kids know about Muharram? Does mindlessly beating their chests educate them about Imam Hussein's suffering? Why do we teach children to mimic adult grief?
I do not wish to run down how people feel and express belief so long as it does not interfere in the public domain of others. But I have always taken strong exception to children being used. This is making use of children. It is not about Dawoodi Bohras (among the most progressive Muslims); it is about any sect, any religion or even any so-called movements against terrorism that put up hoardings using kids for communal harmony.
It is wonderful that the Syedna Mohammed Burhanuddin in his sermons preaches peace and harmony. It also means a harmonious existence within oneself. He probably does not know that parents bring their children here and they are made aware of conflicts, not harmony.
Leave them alone and let them grow up and discover the wonders of nature, of life and of how they wish to perceive god.