AIDS Coalition to Unleash Power (ACT UP) is an international direct action advocacy group working to impact the lives of people with AIDS (PWAs) and the AIDS pandemic to bring about legislation, medical research and treatment and policies to ultimately bring an end to the disease by mitigating loss of health and lives. ACT UP was effectively forme...
[v] - misbehave badly 2. [v] - make itself felt
verb make itself felt as a recurring pain; `My arthritis is acting up again`