There have already been more than 70 mass shootings across the US so far this year, with California experiencing two of the most high-profile in January.
Figures from the Gun Violence Archive - a non-profit research database - shows that the number of mass shootings has gone up significantly in recent years. 1688เช็กชี่เกม
In the last three years there have been more than 600 mass shootings - almost two a day on average.
While the US does not have a single definition for "mass shootings", the Gun Violence Archive defines a mass shooting as an incident in which four or more people are injured or killed. Their figure includes shootings that happen both in homes and in public places.