Public interest lawyers often face strong opposition from powerful interests, such as corporations, governments, or special interest groups, who have the resources and influence to resist legal challenges.

The primary goal of public interest law is to protect the rights of individuals and groups who are often marginalized or disadvantaged, and to promote social justice and equality.

Lobbying is not a common strategy used by public interest lawyers, as it involves influencing lawmakers directly, which may be seen as compromising their independence and objectivity.

Pro bono is the term used to describe the situation where a public interest lawyer represents a client who is unable to pay for legal services, and does so without charging a fee.

Unfavorable public opinion is not a common challenge faced by public interest organizations, as they typically enjoy broad public support for their work.

A test case is a case that is brought to court in order to establish a legal precedent, and is often used by public interest lawyers to challenge existing laws or policies.

Limited resources is not a common challenge faced by public interest clients, as they typically have access to free or low-cost legal services provided by public interest organizations.

A class action lawsuit is a lawsuit in which a group of people with similar legal interests sue a defendant as a group, rather than as individuals.

Direct action is not a common strategy used by public interest lawyers to advocate for policy change, as it involves taking direct action to achieve a desired outcome, such as protests or civil disobedience.

An injunction is a court order that prevents a person or entity from doing something, and is often used by public interest lawyers to prevent imminent harm or a violation of rights.