причинять зло Родине, вредить государству

祸国病民

навлекать беду на страну и причинять страдания народу

极左路线是一条祸国殃民的路线，亡党亡国的路线。

The Ultra-Leftist line was a line that would have wrecked a country, ruined the people, and led to the destruction of the Party and national subjugation.