When were they shut up by the government? It hasn’t been for quite some time if they were posting plaques about his birthplace in Kenya on the day he was inaugurated, three weeks ago.
If you did your homework, you would have read at least two articles which stated that the Kenyan government said that no Obama relatives were allowed to speak to journalists or others without getting government permission. It was before inaguration.
Maybe even three articles. I read each and every thread I can find about this topic. It takes time and effort to find things out.
If you want to know stuff, you have to do the same. Plaques about his birth place are not the same thing as relatives being forbidden to talk to any foreigners unless getting permission from the government, which is what happened.