## Is your feature request related to a problem?

I want to be able to download a CSV of users when I click on a datapoint in a graph

## Describe the solution you'd like

![image](https://user-images.githubusercontent.com/1727427/114418453-cd8d3700-9bb2-11eb-906d-8aa424f48500.png)

When I click on a datapoint I'd like to be able to download a CSV as well as create a cohort from it.

## Describe alternatives you've considered



## Additional context



#### *Thank you* for your feature request – we love each and every one!

posthog/api/action.py
if filter.breakdown_type == "cohort" and filter.breakdown_value != "all":
        events = events.filter(
            Exists(
                CohortPeople.objects.filter(
                    cohort_id=int(filter.breakdown_value), person_id=OuterRef("person_id"),
                ).only("id")
            )
        )
    return events
def _filter_person_prop_breakdown(events: QuerySet, filter: Filter) -> QuerySet:
    if filter.breakdown_type == "person":
        events = events.filter(
            Exists(
                Person.objects.filter(
                    **{"id": OuterRef("person_id"), "properties__{}".format(filter.breakdown): filter.breakdown_value,}
                ).only("id")
            )
        )
    return events
def calculate_people(team: Team, events: QuerySet, filter: Filter, use_offset: bool = True) -> QuerySet: