The WordPress community already has a culture of respect, this doesn't mean that every single person behaves that way 100% of the time. That is an unattainable goal.

Harassment is the same as offence, it is an action performed by the person who feels offended/harassed. Once you learn to deal with the situations which usually give rise to it, the problem goes away.

Most people learn to deal with these sorts of issues at school/college, it is part of growing up. If anything needs to change it is that people who are not comfortable dealing with it need to be guided and encouraged to cope with the problem as it happens.