As you all probably already know, Thailand's caretaker government has been overthrown by a military coup. The Thai constitution has been suspended, Parliament dissolved, and martial law has been imposed. The new junta are claiming that the seizure of power is temporary, that they are acting to overthrow a corrupt and treasonous government and end "social division", and that elections will be held shortly - just as juntas always do. But the stark fact remains that they have stepped outside the role of the military in a democratic society and overthrown a constitutionally-appointed government at gunpoint. This cannot be allowed to stand.
The government of Thaksin Shinawatra is corrupt, and had attempted to manipulate the recent elections - but that does not justify their overthrow. The problem was being dealt with constitutionally, with the courts overturning the results of the elections and calling new ones (scheduled for November). Thaksin's government was widely expected to win those elections - despite its corruption and dirty tricks, it clearly still has majority public support - and so this coup looks more like an attempt to subvert democracy than "defend" it.
We'll have to wait and see how this turns out, and whether international pressure can make the junta back down. And we should hope that this doesn't follow the usual pattern of coups in Thailand. The last one, in 1992, ended in a massacre when people turned out to demonstrate against the new regime. We just have to hope this doesn't have a similar bloody ending.