ANd no, lots of small actions by lots of people are not enough to solve this problem. So what will? Lepping round carrying placards hasn't done much.
Individuals calling for smaller actions, taking indiviual actions has, measurably so (if I can find the relevant bar chart I will post it, unless someone else remembers it!!)
The reality is we need both (assuming marchers will tidy up after themselves). We all need to realitically assess our needs and wants and to do what we can.
My action is based on not buying shit in plastic, scented toiletries, cleaning fluids and all the convenience products so forward on shelves. It is what I can do every day of my life! Others will be able to do more, others less. But it will all make a difference.
Boycotts - they work sometimes. But seeing as Nestle is still in business, and Mondelez and Monsanto that seems to be too much troiuble or most people.
Maybe a march, organised and plastered all over social media is the very best this generation of protestors can see themselves being able to do. It would reflect the changes in how people find value in all sorts of things.