I was covering a talk given by Anand Grover regarding his judicial battle to decriminalize homosexuality in India.
Both of these photos are shoot hand held available light. The first f/2.8, ISO 400, 200mm, 1/60s. I feel like 1/60th is usually fast enough in these situations to keep everything sharp except the a moving hand, that way you can see a slight bit of motion bringing some action to the picture.
This one ISO 500, f 2/8, 70mm, 1/50s, starting to push the limits of hand held without lens motion clur, but I can grab this sitting down and bracing, I kept the foreground dark to prevent blowing out the speaker.