Varieties of criticism
Conservative criticism has nothing much to do with "left-wing" or "right-wing", because left-wing people are often very conservative, in the defined sense, while right-wing people can also be very radical, in the defined sense. The difference between "radical" and "conservative" has more to do with the belief in whether "a change to something genuinely new" is really possible and necessary. Radicals typically believe strongly that such change is highly desirable and necessary, and that it can be achieved. Their criticism is that there is "not enough" change. Conservative critics, by contrast, are very skeptical about any such change, because they feel the change is really "just another form" of something that already exists.
Right-wing populism
In Europe, right-wing populism is an expression used to describe groups, politicians and political parties generally known for their opposition to immigration, mostly from the Islamic world and in most cases Euroscepticism. Right-wing populism in the Western world is generally—though not exclusively—associated with ideologies such as neo-nationalism, anti-globalization, nativism, protectionism and opposition to immigration. Anti-Muslim ideas and sentiments and anti-Semitism serve as the "great unifiers" among right-wing political formations throughout the United States and Europe. Traditional right-wing views such as opposition to an increasing support for the welfare state and a "more lavish, but also more restrictive, domestic social spending" scheme is also described under right-wing populism and is sometimes called "welfare chauvinism".