The whole concept of liberalism is based on the assumption that governments are extremely dangerous and potentially evil and in need of constant control by both the public and it's own institutions. Even if it appears that a specific government or institution is doing good work, it is extremely dangerous to accept that as anything other than a temporary and potentially deceiving state of affairs.
Constant distrust and suspicion of power is crucial to a free and prosperous society. Politicians, officials and even private executives should never receive praise from the public, if they are doing good work the public should just shrug and say to themselves "yeah, ok, you're not horrible right now". Governments are never good, at best they are not actively harmful.