Experts say there are a number of driving forces behind recent mass demonstrations in Australia and the UK, and says they are "not particularly exceptional". They also say media organisations need to treat this issue with caution when reporting. Listen to Australian and world news, and follow trending topics with SBS News Podcasts. TRANSCRIPT (Sound of protesters yelling in London) A weekend of protests in both Australia and the United Kingdom. The fatal shooting of US conservative political activist Charlie Kirk was seized upon by organisers in the U-K to mobilise what is described as the country's largest ultra-conservative rally...