"Scientists involved in the march said they are anxious about political and public rejection of established science such as climate change"
Fudge
1. No one denies "climate change"  The argument is over to what extent it is affected by human activity.  This looks to me like a deliberate attempt to obfuscate.
2. Established science is primarily physics and chemistry, which are fundamentally different from many of the other things calling themselves science in order to achieve credibility by association.  
3. It is a gross over-generalization to imply that people who question "climate science" (i.e. man made climate change) are opposed to science in general.  In fact, it is the opposite, they are anxious to preserve the integrity of science.
etc.