a leading human rights campaigner的用法和样例：
- A leading human rights group says reports of police violence in Turkey are on the rise, and that little is done to punish officers responsible.
- However, she is relegated to second place this year by Jolie, 34, the Hollywood actress, human rights campaigner and mother-of-six.
- She is also well-known for her outspoken support of gay rights, having won the Human Rights Campaign "Ally for Equality" award in 2008.
- On Monday, 4/28 is a special China Human Rights program, with film screenings and a panel discussion led by several of Taiwan's leading human rights advocates.