March For Science, an offshoot of Women's March, gave itself a positive name in 2017 but its motivations were not about science at all. It was about social authoritarianism and promoting a political agenda. And at the top of that agenda was being anti-Trump in much the same way the same groups eight and 12 and 16 years earlier were ant-Bush.
But things may be different in 2018. A lot of the more culturally militant people have quit or been (ironically) marginalized because the science community sees the real opportunity for gain - if they can apply pressure while also being part of a solution.
A lot less of this stuff from 2017