Why protectionism is bad? can you please explain from the economic point of view, why protectionism is bad? If sometimes it is sensible to protect some industries to avoid unemployment, loses of some professionals, death of the industry and decreasing independence? What do you think? tnx
In theory, it is bad because its inefficient. You protect your inefficient industries, I protect mine, we all end up consuming less. We would all be better off with totally free trade...

But of course, there are many complications to this. It might be that an industry needs time to become efficient and you want to protect it in the meanwhile. Or it might be that the other country is not more efficient, but is just dumping their products o your economy until your firms close, after which they will raise their prices and extract a handsome surplus...