It used to be mainstream political practice in Europe until people forgot how World War II started and neoliberalist principles (or the lack of guiding principles other than economic growth, really) took over politics.

Basically it boils down to acknowledging and more or less accepting that fascism is endemic to the populations of modern nations (I don't know if this is necessarily true), but containing it in its own bubble, where it can do relatively little harm. Rightwing extremist parties were excluded from political decision making, shunned by media, and generally viewed as an annoyance at the edge of your vision.

It cuts extremists off from society, which makes it harder for them to recruit new people into their fold.

I think such strategies can work if at the same time there is a strong crackdown on illegal extremist activity, and policies are in place to prevent disenfranchisement of large swaths of the population, so people don't go looking for answers outside of the accepted political parameters.

It needs a different approach thanks to the decentralization of media made possible by the internet, and the role of the modern commercial press needs to be examined as well, but judging from the measures taken right now, people are at least willing to entertain the possibility that not all politics deserve equal treatment.

It's not going to stop the violence right away (things were allowed to escalate for way too long for the genie to quickly go back into the bottle), but I'm certain this will cut off a large part of the lifeblood of modern fascist organizing.

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"So this is what everybody's always talking about! Diablo! If only I'd known. The beauty! The beauty!"