It really depends on the law, doesn't it? That whole "can't legislate morality" straw man question. Anyone can indeed "legislate morality" - what can't be legislated is theology and salvation. ;-)

 And marching to overturn law(s) is one thing - if done peacefully - and even organizing to change laws legislatively. But then willfully breaking laws and then flaunting it as in all those "sanctuary cities" and rioting violently instead of marching peacefully is another thing, entirely.

Should the Church have supported marches to overturn anti-religious laws in the USSR and Mao's Red China? Would the only result of that have been lot's of marcher's deaths or imprisonment in the Gulag?  How slippery is the slope from law abiding  to  anarchic violence to totalitarianism?