Here's a report generated by that database.
https://wits.nctc.gov/FederalDiscove...Q+20101231&N=0
Incidents grouped by perpetrator characteristic (1/01/2010 to 12/31/2010)
Group Type Attacks Dead Wounded Hostage Victims
Christian Extremist 338 3,358 661 2,551 6,570 Environmental/Anti-Globalization 14 0 4 0 4
Hindu Extremist 18 13 117 1 131
Islamic Extremist (Shia) 520 1,241 3,987 390 5,618
Islamic Extremist (Sunni) 19,058 40,920 89,901 12,762 143,583
Islamic Extremist (Unknown) 301 836 3,950 68 4,854 Jewish Extremist 52 6 71 0 77
Neonazi/Fascists/White Supremacists 6 4 8 0 12
Other Religious Extremist 7 7 73 2 82
Secular/Political/Anarchist 17,041 16,376 29,456 59,581 105,413 Tribal/Clan/Ethnic 587 1,975 1,638 1,284 4,897
Unknown 36,757 44,301 98,430 5,234 147,965
Total 74,699 109,037 228,296 81,873 419,206
At least the secular anarchists are a close second.