Pressure groups seek to influence government policy or business activity to promote their members' interests. They can be single-issue focused like the RSPB on bird welfare or multi-issue like trade unions. Groups like the AA protect members' interests while others promote issues like Greenpeace advocating for the environment. Pressure groups use tactics like lobbying, protests, boycotts and occasionally illegal direct actions. Their influence depends on capturing public support and keeping issues relevant. Successful campaigns have led to legal and ethical changes in businesses and policies around issues like the environment, transportation safety and consumer protections. Businesses may accept pressure groups' arguments, defend their own stance, pursue legal action or improve their public image in response to pressure.