Who are the heroes of our time? Who is driving us to a better future? And who is inspiring and guiding us?
Anything goes: famous people, people in your own life, fictional people who represent something to your culture, groups of people working behind the scenes etc.
The only rule is they must be current.
It makes me sad David Attenborough has this world in his later years rather than the one he fought for. But without he how much worse would it be.